Merge branch 'salmanmkc/6-template-validation-syntax-tests' of https://github.com/actions/runner into salmanmkc/6-template-validation-syntax-tests

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

.devcontainer/devcontainer.json

@@ -4,7 +4,7 @@
   "features": {
     "ghcr.io/devcontainers/features/docker-in-docker:1": {},
     "ghcr.io/devcontainers/features/dotnet": {
-      "version": "8.0.408"
+      "version": "8.0.412"
     },
     "ghcr.io/devcontainers/features/node:1": {
       "version": "20"

.github/workflows/build.yml

@@ -41,7 +41,7 @@ jobs:
           devScript: ./dev.sh
 
         - runtime: win-x64
-          os: windows-2019
+          os: windows-latest
           devScript: ./dev
 
         - runtime: win-arm64

.github/workflows/docker-buildx-upgrade.yml

@@ -0,0 +1,144 @@
+name: "Docker/Buildx Version Upgrade"
+
+on:
+  schedule:
+    - cron: '0 0 * * 1'  # Run every Monday at midnight
+  workflow_dispatch:      # Allow manual triggering
+
+jobs:
+  check-versions:
+    runs-on: ubuntu-latest
+    outputs:
+      DOCKER_SHOULD_UPDATE: ${{ steps.check_docker_version.outputs.SHOULD_UPDATE }}
+      DOCKER_LATEST_VERSION: ${{ steps.check_docker_version.outputs.LATEST_VERSION }}
+      DOCKER_CURRENT_VERSION: ${{ steps.check_docker_version.outputs.CURRENT_VERSION }}
+      BUILDX_SHOULD_UPDATE: ${{ steps.check_buildx_version.outputs.SHOULD_UPDATE }}
+      BUILDX_LATEST_VERSION: ${{ steps.check_buildx_version.outputs.LATEST_VERSION }}
+      BUILDX_CURRENT_VERSION: ${{ steps.check_buildx_version.outputs.CURRENT_VERSION }}
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Check Docker version
+        id: check_docker_version
+        shell: bash
+        run: |
+          # Extract current Docker version from Dockerfile
+          current_version=$(grep "ARG DOCKER_VERSION=" ./images/Dockerfile | cut -d'=' -f2)
+
+          # Fetch latest Docker Engine version from Docker's download site
+          # This gets the latest Linux static binary version which matches what's used in the Dockerfile
+          latest_version=$(curl -s https://download.docker.com/linux/static/stable/x86_64/ | grep -o 'docker-[0-9]*\.[0-9]*\.[0-9]*\.tgz' | sort -V | tail -n 1 | sed 's/docker-\(.*\)\.tgz/\1/')
+
+          # Extra check to ensure we got a valid version
+          if [[ ! $latest_version =~ ^[0-9]+\.[0-9]+\.[0-9]+$ ]]; then
+            echo "Failed to retrieve a valid Docker version"
+            exit 1
+          fi
+          
+          should_update=0
+          [ "$current_version" != "$latest_version" ] && should_update=1
+
+          echo "CURRENT_VERSION=${current_version}" >> $GITHUB_OUTPUT
+          echo "LATEST_VERSION=${latest_version}" >> $GITHUB_OUTPUT
+          echo "SHOULD_UPDATE=${should_update}" >> $GITHUB_OUTPUT
+
+      - name: Check Buildx version
+        id: check_buildx_version
+        shell: bash
+        run: |
+          # Extract current Buildx version from Dockerfile
+          current_version=$(grep "ARG BUILDX_VERSION=" ./images/Dockerfile | cut -d'=' -f2)
+
+          # Fetch latest Buildx version
+          latest_version=$(curl -s https://api.github.com/repos/docker/buildx/releases/latest | jq -r '.tag_name' | sed 's/^v//')
+
+          should_update=0
+          [ "$current_version" != "$latest_version" ] && should_update=1
+
+          echo "CURRENT_VERSION=${current_version}" >> $GITHUB_OUTPUT
+          echo "LATEST_VERSION=${latest_version}" >> $GITHUB_OUTPUT
+          echo "SHOULD_UPDATE=${should_update}" >> $GITHUB_OUTPUT
+
+      - name: Create annotations for versions
+        run: |
+          docker_should_update="${{ steps.check_docker_version.outputs.SHOULD_UPDATE }}"
+          buildx_should_update="${{ steps.check_buildx_version.outputs.SHOULD_UPDATE }}"
+          
+          # Show annotation if only Docker needs update
+          if [[ "$docker_should_update" == "1" && "$buildx_should_update" == "0" ]]; then
+            echo "::warning ::Docker version (${{ steps.check_docker_version.outputs.LATEST_VERSION }}) needs update but Buildx is current. Only updating when both need updates."
+          fi
+          
+          # Show annotation if only Buildx needs update
+          if [[ "$docker_should_update" == "0" && "$buildx_should_update" == "1" ]]; then
+            echo "::warning ::Buildx version (${{ steps.check_buildx_version.outputs.LATEST_VERSION }}) needs update but Docker is current. Only updating when both need updates."
+          fi
+          
+          # Show annotation when both are current
+          if [[ "$docker_should_update" == "0" && "$buildx_should_update" == "0" ]]; then
+            echo "::warning ::Latest Docker version is ${{ steps.check_docker_version.outputs.LATEST_VERSION }} and Buildx version is ${{ steps.check_buildx_version.outputs.LATEST_VERSION }}. No updates needed."
+          fi
+
+  update-versions:
+    permissions:
+      pull-requests: write
+      contents: write
+    needs: [check-versions]
+    if: ${{ needs.check-versions.outputs.DOCKER_SHOULD_UPDATE == 1 && needs.check-versions.outputs.BUILDX_SHOULD_UPDATE == 1 }}
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+      
+      - name: Update Docker version
+        shell: bash
+        run: |
+          latest_version="${{ needs.check-versions.outputs.DOCKER_LATEST_VERSION }}"
+          current_version="${{ needs.check-versions.outputs.DOCKER_CURRENT_VERSION }}"
+          
+          # Update version in Dockerfile
+          sed -i "s/ARG DOCKER_VERSION=$current_version/ARG DOCKER_VERSION=$latest_version/g" ./images/Dockerfile
+      
+      - name: Update Buildx version
+        shell: bash
+        run: |
+          latest_version="${{ needs.check-versions.outputs.BUILDX_LATEST_VERSION }}"
+          current_version="${{ needs.check-versions.outputs.BUILDX_CURRENT_VERSION }}"
+          
+          # Update version in Dockerfile
+          sed -i "s/ARG BUILDX_VERSION=$current_version/ARG BUILDX_VERSION=$latest_version/g" ./images/Dockerfile
+      
+      - name: Commit changes and create Pull Request
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        run: |
+          # Setup branch and commit information
+          branch_name="feature/docker-buildx-upgrade"
+          commit_message="Upgrade Docker to v${{ needs.check-versions.outputs.DOCKER_LATEST_VERSION }} and Buildx to v${{ needs.check-versions.outputs.BUILDX_LATEST_VERSION }}"
+          pr_title="Update Docker to v${{ needs.check-versions.outputs.DOCKER_LATEST_VERSION }} and Buildx to v${{ needs.check-versions.outputs.BUILDX_LATEST_VERSION }}"
+          
+          # Configure git
+          git config --global user.name "github-actions[bot]"
+          git config --global user.email "<41898282+github-actions[bot]@users.noreply.github.com>"
+
+          # Create branch or switch to it if it exists
+          if git show-ref --quiet refs/remotes/origin/$branch_name; then
+            git fetch origin
+            git checkout -B "$branch_name" origin/$branch_name
+          else
+            git checkout -b "$branch_name"
+          fi
+          
+          # Commit and push changes
+          git commit -a -m "$commit_message"
+          git push --force origin "$branch_name"
+          
+          # Create PR
+          pr_body="Upgrades Docker version from ${{ needs.check-versions.outputs.DOCKER_CURRENT_VERSION }} to ${{ needs.check-versions.outputs.DOCKER_LATEST_VERSION }} and Docker Buildx version from ${{ needs.check-versions.outputs.BUILDX_CURRENT_VERSION }} to ${{ needs.check-versions.outputs.BUILDX_LATEST_VERSION }}.\n\n"
+          pr_body+="Release notes: https://docs.docker.com/engine/release-notes/\n\n"
+          pr_body+="---\n\nAutogenerated by [Docker/Buildx Version Upgrade Workflow](https://github.com/actions/runner/blob/main/.github/workflows/docker-buildx-upgrade.yml)"
+          
+          gh pr create -B main -H "$branch_name" \
+            --title "$pr_title" \
+            --body "$pr_body"

.github/workflows/release.yml

@@ -77,7 +77,7 @@ jobs:
           devScript: ./dev.sh
 
         - runtime: win-x64
-          os: windows-2019
+          os: windows-latest
           devScript: ./dev
 
         - runtime: win-arm64

README.md

@@ -20,6 +20,20 @@ Runner releases:
 
 ![linux](docs/res/linux_sm.png)  [Pre-reqs](docs/start/envlinux.md) | [Download](https://github.com/actions/runner/releases)
 
-## Contribute
+### Note
 
-We accept contributions in the form of issues and pull requests. The runner typically requires changes across the entire system and we aim for issues in the runner to be entirely self contained and fixable here. Therefore, we will primarily handle bug issues opened in this repo and we kindly request you to create all feature and enhancement requests on the [GitHub Feedback](https://github.com/community/community/discussions/categories/actions-and-packages) page. [Read more about our guidelines here](docs/contribute.md) before contributing.
+Thank you for your interest in this GitHub repo, however, right now we are not taking contributions. 
+
+We continue to focus our resources on strategic areas that help our customers be successful while making developers' lives easier. While GitHub Actions remains a key part of this vision, we are allocating resources towards other areas of Actions and are not taking contributions to this repository at this time. The GitHub public roadmap is the best place to follow along for any updates on features we’re working on and what stage they’re in.
+
+We are taking the following steps to better direct requests related to GitHub Actions, including:
+
+1. We will be directing questions and support requests to our [Community Discussions area](https://github.com/orgs/community/discussions/categories/actions)
+
+2. High Priority bugs can be reported through Community Discussions or you can report these to our support team https://support.github.com/contact/bug-report.
+
+3. Security Issues should be handled as per our [security.md](security.md)
+
+We will still provide security updates for this project and fix major breaking changes during this time.
+
+You are welcome to still raise bugs in this repo.

docs/checks/nodejs.md

@@ -4,9 +4,9 @@
 
 Make sure the built-in node.js has access to GitHub.com or GitHub Enterprise Server.
 
-The runner carries its own copy of node.js executable under `<runner_root>/externals/node20/`.
+The runner carries its own copies of node.js executables under `<runner_root>/externals/node20/` and `<runner_root>/externals/node24/`.
 
-All javascript base Actions will get executed by the built-in `node` at `<runner_root>/externals/node20/`.
+All javascript base Actions will get executed by the built-in `node` at either `<runner_root>/externals/node20/` or `<runner_root>/externals/node24/` depending on the version specified in the action's metadata.
 
 > Not the `node` from `$PATH`
 

images/Dockerfile

@@ -5,8 +5,8 @@ ARG TARGETOS
 ARG TARGETARCH
 ARG RUNNER_VERSION
 ARG RUNNER_CONTAINER_HOOKS_VERSION=0.7.0
-ARG DOCKER_VERSION=28.1.1
-ARG BUILDX_VERSION=0.23.0
+ARG DOCKER_VERSION=28.3.2
+ARG BUILDX_VERSION=0.26.1
 
 RUN apt update -y && apt install curl unzip -y
 

releaseNote.md

@@ -1,37 +1,13 @@
 ## What's Changed
-* Increase error body max length before truncation by @ericsciple in https://github.com/actions/runner/pull/3762
-* Fix release.yml break by upgrading actions/github-script by @TingluoHuang in https://github.com/actions/runner/pull/3772
-* Small runner code cleanup. by @TingluoHuang in https://github.com/actions/runner/pull/3773
-* Enable hostcontext to track auth migration. by @TingluoHuang in https://github.com/actions/runner/pull/3776
-* Add option in OAuthCred to load authUrlV2. by @TingluoHuang in https://github.com/actions/runner/pull/3777
-* Remove create session with broker in MessageListener. by @TingluoHuang in https://github.com/actions/runner/pull/3782
-* Enable auth migration based on config refresh. by @TingluoHuang in https://github.com/actions/runner/pull/3786
-* Set JWT.alg to PS256 with PssPadding. by @TingluoHuang in https://github.com/actions/runner/pull/3789
-* Enable FIPS by default. by @TingluoHuang in https://github.com/actions/runner/pull/3793
-* Support auth migration using authUrlV2 in Runner/MessageListener. by @TingluoHuang in https://github.com/actions/runner/pull/3787
-* Cleanup feature flag actions_skip_retry_complete_job_upon_known_errors by @ericsciple in https://github.com/actions/runner/pull/3806
-* Update dotnet sdk to latest version @8.0.408 by @github-actions in https://github.com/actions/runner/pull/3808
-* Bump hook to 0.7.0 by @nikola-jokic in https://github.com/actions/runner/pull/3813
-* Allow enable auth migration by default. by @TingluoHuang in https://github.com/actions/runner/pull/3804
-* Do not retry /renewjob on 404 by @ericsciple in https://github.com/actions/runner/pull/3828
-* Bump Microsoft.NET.Test.Sdk from 17.12.0 to 17.13.0 in /src by @dependabot in https://github.com/actions/runner/pull/3719
-* Add copilot-instructions.md by @pje in https://github.com/actions/runner/pull/3810
-* Bump actions/upload-release-asset from 1.0.1 to 1.0.2 by @dependabot in https://github.com/actions/runner/pull/3553
-* Ignore exception during auth migration. by @TingluoHuang in https://github.com/actions/runner/pull/3835
-* feat: default fromPath for problem matchers by @dsanders11 in https://github.com/actions/runner/pull/3802
-* Bump Azure.Storage.Blobs from 12.23.0 to 12.24.0 in /src by @dependabot in https://github.com/actions/runner/pull/3837
-* Bump nodejs version. by @TingluoHuang in https://github.com/actions/runner/pull/3840
-* Feature-flagged support for `JobContext.CheckRunID` by @pje in https://github.com/actions/runner/pull/3811
-* Bump System.ServiceProcess.ServiceController from 8.0.0 to 8.0.1 in /src by @dependabot in https://github.com/actions/runner/pull/3844
-* Bump xunit.runner.visualstudio from 2.5.8 to 2.8.2 in /src by @dependabot in https://github.com/actions/runner/pull/3845
-* Make sure the token's claims are match as expected. by @TingluoHuang in https://github.com/actions/runner/pull/3846
-* Prefer _migrated config on startup by @lokesh755 in https://github.com/actions/runner/pull/3853
-* Update docker and buildx by @TingluoHuang in https://github.com/actions/runner/pull/3854
+* Try add orchestrationid into user-agent using token claim. by @TingluoHuang in https://github.com/actions/runner/pull/3945
+* Fix null reference exception in user agent handling by @salmanmkc in https://github.com/actions/runner/pull/3946
+* Runner Support for executing Node24 Actions by @salmanmkc in https://github.com/actions/runner/pull/3940
+* Update dotnet sdk to latest version @8.0.412 by @github-actions[bot] in https://github.com/actions/runner/pull/3941
 
 ## New Contributors
-* @dsanders11 made their first contribution in https://github.com/actions/runner/pull/3802
+* @salmanmkc made their first contribution in https://github.com/actions/runner/pull/3946
 
-**Full Changelog**: https://github.com/actions/runner/compare/v2.323.0...v2.324.0
+**Full Changelog**: https://github.com/actions/runner/compare/v2.326.0...v2.327.0
 
 _Note: Actions Runner follows a progressive release policy, so the latest release might not be available to your enterprise, organization, or repository yet.
 To confirm which version of the Actions Runner you should expect, please view the download instructions for your enterprise, organization, or repository.

releaseVersion

@@ -1 +1 @@
-2.324.0
+<Update to ./src/runnerversion when creating release>

src/Misc/expressionFunc/hashFiles/package-lock.json

@@ -716,9 +716,10 @@
       }
     },
     "node_modules/brace-expansion": {
-      "version": "1.1.11",
-      "resolved": "https://registry.npmjs.org/brace-expansion/-/brace-expansion-1.1.11.tgz",
-      "integrity": "sha512-iCuPHDFgrHX7H2vEI/5xpz07zSHB00TpugqhmYtVmMO6518mCuRMoOYFldEBl0g187ufozdaHgWKcYFb61qGiA==",
+      "version": "1.1.12",
+      "resolved": "https://registry.npmjs.org/brace-expansion/-/brace-expansion-1.1.12.tgz",
+      "integrity": "sha512-9T9UjW3r0UW5c1Q7GTwllptXwhvYmEzFhzMfZ9H7FQWt+uZePjZPjBP/W1ZEyZ1twGWom5/56TF4lPcqjnDHcg==",
+      "license": "MIT",
       "dependencies": {
         "balanced-match": "^1.0.0",
         "concat-map": "0.0.1"
@@ -4751,9 +4752,9 @@
       }
     },
     "brace-expansion": {
-      "version": "1.1.11",
-      "resolved": "https://registry.npmjs.org/brace-expansion/-/brace-expansion-1.1.11.tgz",
-      "integrity": "sha512-iCuPHDFgrHX7H2vEI/5xpz07zSHB00TpugqhmYtVmMO6518mCuRMoOYFldEBl0g187ufozdaHgWKcYFb61qGiA==",
+      "version": "1.1.12",
+      "resolved": "https://registry.npmjs.org/brace-expansion/-/brace-expansion-1.1.12.tgz",
+      "integrity": "sha512-9T9UjW3r0UW5c1Q7GTwllptXwhvYmEzFhzMfZ9H7FQWt+uZePjZPjBP/W1ZEyZ1twGWom5/56TF4lPcqjnDHcg==",
       "requires": {
         "balanced-match": "^1.0.0",
         "concat-map": "0.0.1"

src/Misc/externals.sh

@@ -6,7 +6,8 @@ NODE_URL=https://nodejs.org/dist
 NODE_ALPINE_URL=https://github.com/actions/alpine_nodejs/releases/download
 # When you update Node versions you must also create a new release of alpine_nodejs at that updated version.
 # Follow the instructions here: https://github.com/actions/alpine_nodejs?tab=readme-ov-file#getting-started
-NODE20_VERSION="20.19.1"
+NODE20_VERSION="20.19.3"
+NODE24_VERSION="24.4.0"
 
 get_abs_path() {
   # exploits the fact that pwd will print abs path when no args
@@ -139,6 +140,8 @@ function acquireExternalTool() {
 if [[ "$PACKAGERUNTIME" == "win-x64" || "$PACKAGERUNTIME" == "win-x86" ]]; then
     acquireExternalTool "$NODE_URL/v${NODE20_VERSION}/$PACKAGERUNTIME/node.exe" node20/bin
     acquireExternalTool "$NODE_URL/v${NODE20_VERSION}/$PACKAGERUNTIME/node.lib" node20/bin
+    acquireExternalTool "$NODE_URL/v${NODE24_VERSION}/$PACKAGERUNTIME/node.exe" node24/bin
+    acquireExternalTool "$NODE_URL/v${NODE24_VERSION}/$PACKAGERUNTIME/node.lib" node24/bin
     if [[ "$PRECACHE" != "" ]]; then
         acquireExternalTool "https://github.com/microsoft/vswhere/releases/download/2.6.7/vswhere.exe" vswhere
     fi
@@ -149,6 +152,8 @@ if [[ "$PACKAGERUNTIME" == "win-arm64" ]]; then
     # todo: replace these with official release when available
     acquireExternalTool "$NODE_URL/v${NODE20_VERSION}/$PACKAGERUNTIME/node.exe" node20/bin
     acquireExternalTool "$NODE_URL/v${NODE20_VERSION}/$PACKAGERUNTIME/node.lib" node20/bin
+    acquireExternalTool "$NODE_URL/v${NODE24_VERSION}/$PACKAGERUNTIME/node.exe" node24/bin
+    acquireExternalTool "$NODE_URL/v${NODE24_VERSION}/$PACKAGERUNTIME/node.lib" node24/bin
     if [[ "$PRECACHE" != "" ]]; then
         acquireExternalTool "https://github.com/microsoft/vswhere/releases/download/2.6.7/vswhere.exe" vswhere
     fi
@@ -157,21 +162,26 @@ fi
 # Download the external tools only for OSX.
 if [[ "$PACKAGERUNTIME" == "osx-x64" ]]; then
     acquireExternalTool "$NODE_URL/v${NODE20_VERSION}/node-v${NODE20_VERSION}-darwin-x64.tar.gz" node20 fix_nested_dir
+    acquireExternalTool "$NODE_URL/v${NODE24_VERSION}/node-v${NODE24_VERSION}-darwin-x64.tar.gz" node24 fix_nested_dir
 fi
 
 if [[ "$PACKAGERUNTIME" == "osx-arm64" ]]; then
     # node.js v12 doesn't support macOS on arm64.
     acquireExternalTool "$NODE_URL/v${NODE20_VERSION}/node-v${NODE20_VERSION}-darwin-arm64.tar.gz" node20 fix_nested_dir
+    acquireExternalTool "$NODE_URL/v${NODE24_VERSION}/node-v${NODE24_VERSION}-darwin-arm64.tar.gz" node24 fix_nested_dir
 fi
 
 # Download the external tools for Linux PACKAGERUNTIMEs.
 if [[ "$PACKAGERUNTIME" == "linux-x64" ]]; then
     acquireExternalTool "$NODE_URL/v${NODE20_VERSION}/node-v${NODE20_VERSION}-linux-x64.tar.gz" node20 fix_nested_dir
     acquireExternalTool "$NODE_ALPINE_URL/v${NODE20_VERSION}/node-v${NODE20_VERSION}-alpine-x64.tar.gz" node20_alpine
+    acquireExternalTool "$NODE_URL/v${NODE24_VERSION}/node-v${NODE24_VERSION}-linux-x64.tar.gz" node24 fix_nested_dir
+    acquireExternalTool "$NODE_ALPINE_URL/v${NODE24_VERSION}/node-v${NODE24_VERSION}-alpine-x64.tar.gz" node24_alpine
 fi
 
 if [[ "$PACKAGERUNTIME" == "linux-arm64" ]]; then
     acquireExternalTool "$NODE_URL/v${NODE20_VERSION}/node-v${NODE20_VERSION}-linux-arm64.tar.gz" node20 fix_nested_dir
+    acquireExternalTool "$NODE_URL/v${NODE24_VERSION}/node-v${NODE24_VERSION}-linux-arm64.tar.gz" node24 fix_nested_dir
 fi
 
 if [[ "$PACKAGERUNTIME" == "linux-arm" ]]; then

src/Misc/layoutbin/hashFiles/index.js

@@ -3299,7 +3299,7 @@ function expand(str, isTop) {
   var isOptions = m.body.indexOf(',') >= 0;
   if (!isSequence && !isOptions) {
     // {a},b}
-    if (m.post.match(/,.*\}/)) {
+    if (m.post.match(/,(?!,).*\}/)) {
       str = m.pre + '{' + m.body + escClose + m.post;
       return expand(str);
     }

src/Misc/layoutbin/update.sh.template

@@ -123,7 +123,8 @@ fi
 # fix upgrade issue with macOS when running as a service
 attemptedtargetedfix=0
 currentplatform=$(uname | awk '{print tolower($0)}')
-if [[ "$currentplatform" == 'darwin'  && restartinteractiverunner -eq 0 ]]; then
+if [[ "$currentplatform" == 'darwin'  && $restartinteractiverunner -eq 0 ]];
+then
     # We needed a fix for https://github.com/actions/runner/issues/743
     # We will recreate the ./externals/nodeXY/bin/node of the past runner version that launched the runnerlistener service
     # Otherwise mac gatekeeper kills the processes we spawn on creation as we are running a process with no backing file
@@ -135,16 +136,22 @@ if [[ "$currentplatform" == 'darwin'  && restartinteractiverunner -eq 0 ]]; then
     then
         # inspect the open file handles to find the node process
         # we can't actually inspect the process using ps because it uses relative paths and doesn't follow symlinks
-        nodever="node20"
+        # Try finding node24 first, then fallback to earlier versions if needed
+        nodever="node24"
         path=$(lsof -a -g "$procgroup" -F n | grep $nodever/bin/node | grep externals | tail -1 | cut -c2-)
-        if [[ $? -ne 0 || -z "$path" ]] # Fallback if RunnerService.js was started with node16
+        if [[ $? -ne 0 || -z "$path" ]] # Fallback if RunnerService.js was started with node20
         then
-            nodever="node16"
+            nodever="node20"
             path=$(lsof -a -g "$procgroup" -F n | grep $nodever/bin/node | grep externals | tail -1 | cut -c2-)
-            if [[ $? -ne 0 || -z "$path" ]] # Fallback if RunnerService.js was started with node12
+            if [[ $? -ne 0 || -z "$path" ]] # Fallback if RunnerService.js was started with node16
             then
-                nodever="node12"
+                nodever="node16"
                 path=$(lsof -a -g "$procgroup" -F n | grep $nodever/bin/node | grep externals | tail -1 | cut -c2-)
+                if [[ $? -ne 0 || -z "$path" ]] # Fallback if RunnerService.js was started with node12
+                then
+                    nodever="node12"
+                    path=$(lsof -a -g "$procgroup" -F n | grep $nodever/bin/node | grep externals | tail -1 | cut -c2-)
+                fi
             fi
         fi
         if [[ $? -eq 0 && -n "$path" ]]

src/Runner.Common/Constants.cs

@@ -168,6 +168,7 @@ namespace GitHub.Runner.Common
                 public static readonly string UseContainerPathForTemplate = "DistributedTask.UseContainerPathForTemplate";
                 public static readonly string AllowRunnerContainerHooks = "DistributedTask.AllowRunnerContainerHooks";
                 public static readonly string AddCheckRunIdToJobContext = "actions_add_check_run_id_to_job_context";
+                public static readonly string DisplayHelpfulActionsDownloadErrors = "actions_display_helpful_actions_download_errors";
             }
 
             public static readonly string InternalTelemetryIssueDataKey = "_internal_telemetry";

src/Runner.Common/HostContext.cs

@@ -15,6 +15,7 @@ using System.Threading.Tasks;
 using GitHub.DistributedTask.Logging;
 using GitHub.Runner.Common.Util;
 using GitHub.Runner.Sdk;
+using GitHub.Services.WebApi.Jwt;
 
 namespace GitHub.Runner.Common
 {
@@ -306,6 +307,36 @@ namespace GitHub.Runner.Common
                 {
                     _userAgents.Add(new ProductInfoHeaderValue("ClientId", clientId));
                 }
+
+                // for Hosted runner, we can pull orchestrationId from JWT claims of the runner listening token.
+                if (credData != null &&
+                    credData.Scheme == Constants.Configuration.OAuthAccessToken &&
+                    credData.Data.TryGetValue(Constants.Runner.CommandLine.Args.Token, out var accessToken) &&
+                    !string.IsNullOrEmpty(accessToken))
+                {
+                    try
+                    {
+                        var jwt = JsonWebToken.Create(accessToken);
+                        var claims = jwt.ExtractClaims();
+                        var orchestrationId = claims.FirstOrDefault(x => string.Equals(x.Type, "orch_id", StringComparison.OrdinalIgnoreCase))?.Value;
+                        if (string.IsNullOrEmpty(orchestrationId))
+                        {
+                            // fallback to orchid for C# actions-service
+                            orchestrationId = claims.FirstOrDefault(x => string.Equals(x.Type, "orchid", StringComparison.OrdinalIgnoreCase))?.Value;
+                        }
+
+                        if (!string.IsNullOrEmpty(orchestrationId))
+                        {
+                            _trace.Info($"Pull OrchestrationId {orchestrationId} from runner JWT claims");
+                            _userAgents.Insert(0, new ProductInfoHeaderValue("OrchestrationId", orchestrationId));
+                        }
+                    }
+                    catch (Exception ex)
+                    {
+                        _trace.Error("Fail to extract OrchestrationId from runner JWT claims");
+                        _trace.Error(ex);
+                    }
+                }
             }
 
             var runnerFile = GetConfigFile(WellKnownConfigFile.Runner);

src/Runner.Common/LaunchServer.cs

@@ -15,7 +15,7 @@ namespace GitHub.Runner.Common
     {
         void InitializeLaunchClient(Uri uri, string token);
 
-        Task<ActionDownloadInfoCollection> ResolveActionsDownloadInfoAsync(Guid planId, Guid jobId, ActionReferenceList actionReferenceList, CancellationToken cancellationToken);
+        Task<ActionDownloadInfoCollection> ResolveActionsDownloadInfoAsync(Guid planId, Guid jobId, ActionReferenceList actionReferenceList, CancellationToken cancellationToken, bool displayHelpfulActionsDownloadErrors);
     }
 
     public sealed class LaunchServer : RunnerService, ILaunchServer
@@ -42,12 +42,16 @@ namespace GitHub.Runner.Common
         }
 
         public Task<ActionDownloadInfoCollection> ResolveActionsDownloadInfoAsync(Guid planId, Guid jobId, ActionReferenceList actionReferenceList,
-            CancellationToken cancellationToken)
+            CancellationToken cancellationToken, bool displayHelpfulActionsDownloadErrors)
         {
             if (_launchClient != null)
             {
-                return _launchClient.GetResolveActionsDownloadInfoAsync(planId, jobId, actionReferenceList,
-                    cancellationToken: cancellationToken);
+                if (!displayHelpfulActionsDownloadErrors)
+                {
+                    return _launchClient.GetResolveActionsDownloadInfoAsync(planId, jobId, actionReferenceList,
+                        cancellationToken: cancellationToken);
+                }
+                return _launchClient.GetResolveActionsDownloadInfoAsyncV2(planId, jobId, actionReferenceList, cancellationToken);
             }
 
             throw new InvalidOperationException("Launch client is not initialized.");

src/Runner.Common/Util/NodeUtil.cs

@@ -18,5 +18,22 @@ namespace GitHub.Runner.Common.Util
             }
             return _defaultNodeVersion;
         }
+
+        /// <summary>
+        /// Checks if Node24 is requested but running on ARM32 Linux, and determines if fallback is needed.
+        /// </summary>
+        /// <param name="preferredVersion">The preferred Node version</param>
+        /// <returns>A tuple containing the adjusted node version and an optional warning message</returns>
+        public static (string nodeVersion, string warningMessage) CheckNodeVersionForLinuxArm32(string preferredVersion)
+        {
+            if (string.Equals(preferredVersion, "node24", StringComparison.OrdinalIgnoreCase) &&
+                Constants.Runner.PlatformArchitecture.Equals(Constants.Architecture.Arm) &&
+                Constants.Runner.Platform.Equals(Constants.OSPlatform.Linux))
+            {
+                return ("node20", "Node 24 is not supported on Linux ARM32 platforms. Falling back to Node 20.");
+            }
+
+            return (preferredVersion, null);
+        }
     }
 }

src/Runner.Listener/Configuration/ConfigurationManager.cs

@@ -70,7 +70,7 @@ namespace GitHub.Runner.Listener.Configuration
         public RunnerSettings LoadMigratedSettings()
         {
             Trace.Info(nameof(LoadMigratedSettings));
-            
+
             // Check if migrated settings file exists
             if (!_store.IsMigratedConfigured())
             {
@@ -387,6 +387,14 @@ namespace GitHub.Runner.Listener.Configuration
                     },
                 };
 
+                if (agent.Properties.GetValue("EnableAuthMigrationByDefault", false) &&
+                    agent.Properties.TryGetValue<string>("AuthorizationUrlV2", out var authUrlV2) &&
+                    !string.IsNullOrEmpty(authUrlV2))
+                {
+                    credentialData.Data["enableAuthMigrationByDefault"] = "true";
+                    credentialData.Data["authorizationUrlV2"] = authUrlV2;
+                }
+
                 // Save the negotiated OAuth credential data
                 _store.SaveCredential(credentialData);
             }

src/Runner.Listener/JobDispatcher.cs

@@ -110,7 +110,12 @@ namespace GitHub.Runner.Listener
             {
                 var jwt = JsonWebToken.Create(accessToken);
                 var claims = jwt.ExtractClaims();
-                orchestrationId = claims.FirstOrDefault(x => string.Equals(x.Type, "orchid", StringComparison.OrdinalIgnoreCase))?.Value;
+                orchestrationId = claims.FirstOrDefault(x => string.Equals(x.Type, "orch_id", StringComparison.OrdinalIgnoreCase))?.Value;
+                if (string.IsNullOrEmpty(orchestrationId))
+                {
+                    orchestrationId = claims.FirstOrDefault(x => string.Equals(x.Type, "orchid", StringComparison.OrdinalIgnoreCase))?.Value;
+                }
+
                 if (!string.IsNullOrEmpty(orchestrationId))
                 {
                     Trace.Info($"Pull OrchestrationId {orchestrationId} from JWT claims");

src/Runner.Sdk/Util/VssUtil.cs

@@ -38,6 +38,7 @@ namespace GitHub.Runner.Sdk
             if (StringUtil.ConvertToBoolean(Environment.GetEnvironmentVariable("GITHUB_ACTIONS_RUNNER_TLS_NO_VERIFY")))
             {
                 VssClientHttpRequestSettings.Default.ServerCertificateValidationCallback = HttpClientHandler.DangerousAcceptAnyServerCertificateValidator;
+                RawClientHttpRequestSettings.Default.ServerCertificateValidationCallback = HttpClientHandler.DangerousAcceptAnyServerCertificateValidator;
             }
 
             var rawHeaderValues = new List<ProductInfoHeaderValue>();

src/Runner.Service/Windows/App.config

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="utf-8" ?>
 <configuration>
     <startup>
-        <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.5" />
+        <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.7" />
     </startup>
 </configuration>

src/Runner.Service/Windows/RunnerService.csproj

@@ -18,7 +18,7 @@
       <TargetFrameworkVersion>v4.8</TargetFrameworkVersion>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(PackageRuntime)' != 'win-arm64' ">
-      <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
+      <TargetFrameworkVersion>v4.7</TargetFrameworkVersion>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
     <PlatformTarget>AnyCPU</PlatformTarget>

src/Runner.Worker/ActionManager.cs

@@ -688,7 +688,8 @@ namespace GitHub.Runner.Worker
                 {
                     if (MessageUtil.IsRunServiceJob(executionContext.Global.Variables.Get(Constants.Variables.System.JobRequestType)))
                     {
-                        actionDownloadInfos = await launchServer.ResolveActionsDownloadInfoAsync(executionContext.Global.Plan.PlanId, executionContext.Root.Id, new WebApi.ActionReferenceList { Actions = actionReferences }, executionContext.CancellationToken);
+                        var displayHelpfulActionsDownloadErrors = executionContext.Global.Variables.GetBoolean(Constants.Runner.Features.DisplayHelpfulActionsDownloadErrors) ?? false;
+                        actionDownloadInfos = await launchServer.ResolveActionsDownloadInfoAsync(executionContext.Global.Plan.PlanId, executionContext.Root.Id, new WebApi.ActionReferenceList { Actions = actionReferences }, executionContext.CancellationToken, displayHelpfulActionsDownloadErrors);
                     }
                     else
                     {

src/Runner.Worker/ActionManifestManager.cs

@@ -450,7 +450,8 @@ namespace GitHub.Runner.Worker
                 }
                 else if (string.Equals(usingToken.Value, "node12", StringComparison.OrdinalIgnoreCase) ||
                          string.Equals(usingToken.Value, "node16", StringComparison.OrdinalIgnoreCase) ||
-                         string.Equals(usingToken.Value, "node20", StringComparison.OrdinalIgnoreCase))
+                         string.Equals(usingToken.Value, "node20", StringComparison.OrdinalIgnoreCase) ||
+                         string.Equals(usingToken.Value, "node24", StringComparison.OrdinalIgnoreCase))
                 {
                     if (string.IsNullOrEmpty(mainToken?.Value))
                     {
@@ -490,7 +491,7 @@ namespace GitHub.Runner.Worker
                 }
                 else
                 {
-                    throw new ArgumentOutOfRangeException($"'using: {usingToken.Value}' is not supported, use 'docker', 'node12', 'node16' or 'node20' instead.");
+                    throw new ArgumentOutOfRangeException($"'using: {usingToken.Value}' is not supported, use 'docker', 'node12', 'node16', 'node20' or 'node24' instead.");
                 }
             }
             else if (pluginToken != null)
@@ -501,7 +502,7 @@ namespace GitHub.Runner.Worker
                 };
             }
 
-            throw new NotSupportedException("Missing 'using' value. 'using' requires 'composite', 'docker', 'node12', 'node16' or 'node20'.");
+            throw new NotSupportedException("Missing 'using' value. 'using' requires 'composite', 'docker', 'node12', 'node16', 'node20' or 'node24'.");
         }
 
         private void ConvertInputs(

src/Runner.Worker/Handlers/StepHost.cs

@@ -1,6 +1,5 @@
 using System;
 using System.Collections.Generic;
-using GitHub.DistributedTask.Pipelines.ContextData;
 using System.Text;
 using System.Threading;
 using System.Threading.Tasks;
@@ -9,7 +8,6 @@ using GitHub.Runner.Common;
 using GitHub.Runner.Sdk;
 using System.Linq;
 using GitHub.Runner.Worker.Container.ContainerHooks;
-using System.IO;
 using System.Threading.Channels;
 
 namespace GitHub.Runner.Worker.Handlers
@@ -60,7 +58,14 @@ namespace GitHub.Runner.Worker.Handlers
 
         public Task<string> DetermineNodeRuntimeVersion(IExecutionContext executionContext, string preferredVersion)
         {
-            return Task.FromResult<string>(preferredVersion);
+            // Use NodeUtil to check if Node24 is requested but we're on ARM32 Linux
+            var (nodeVersion, warningMessage) = Common.Util.NodeUtil.CheckNodeVersionForLinuxArm32(preferredVersion);
+            if (!string.IsNullOrEmpty(warningMessage))
+            {
+                executionContext.Warning(warningMessage);
+            }
+            
+            return Task.FromResult(nodeVersion);
         }
 
         public async Task<int> ExecuteAsync(IExecutionContext context,
@@ -137,8 +142,12 @@ namespace GitHub.Runner.Worker.Handlers
 
         public async Task<string> DetermineNodeRuntimeVersion(IExecutionContext executionContext, string preferredVersion)
         {
-            // Optimistically use the default
-            string nodeExternal = preferredVersion;
+            // Use NodeUtil to check if Node24 is requested but we're on ARM32 Linux
+            var (nodeExternal, warningMessage) = Common.Util.NodeUtil.CheckNodeVersionForLinuxArm32(preferredVersion);
+            if (!string.IsNullOrEmpty(warningMessage))
+            {
+                executionContext.Warning(warningMessage);
+            }
 
             if (FeatureManager.IsContainerHooksEnabled(executionContext.Global.Variables))
             {
@@ -264,7 +273,14 @@ namespace GitHub.Runner.Worker.Handlers
 
         private string CheckPlatformForAlpineContainer(IExecutionContext executionContext, string preferredVersion)
         {
-            string nodeExternal = preferredVersion;
+            // Use NodeUtil to check if Node24 is requested but we're on ARM32 Linux
+            var (nodeExternal, warningMessage) = Common.Util.NodeUtil.CheckNodeVersionForLinuxArm32(preferredVersion);
+            if (!string.IsNullOrEmpty(warningMessage))
+            {
+                executionContext.Warning(warningMessage);
+            }
+
+            // Check for Alpine container compatibility
             if (!Constants.Runner.PlatformArchitecture.Equals(Constants.Architecture.X64))
             {
                 var os = Constants.Runner.Platform.ToString();

src/Runner.Worker/JobRunner.cs

@@ -50,8 +50,11 @@ namespace GitHub.Runner.Worker
             if (message.Variables.TryGetValue(Constants.Variables.System.OrchestrationId, out VariableValue orchestrationId) &&
                 !string.IsNullOrEmpty(orchestrationId.Value))
             {
-                // make the orchestration id the first item in the user-agent header to avoid get truncated in server log.
-                HostContext.UserAgents.Insert(0, new ProductInfoHeaderValue("OrchestrationId", orchestrationId.Value));
+                if (!HostContext.UserAgents.Any(x => string.Equals(x.Product?.Name, "OrchestrationId", StringComparison.OrdinalIgnoreCase)))
+                {
+                    // make the orchestration id the first item in the user-agent header to avoid get truncated in server log.
+                    HostContext.UserAgents.Insert(0, new ProductInfoHeaderValue("OrchestrationId", orchestrationId.Value));
+                }
 
                 // make sure orchestration id is in the user-agent header.
                 VssUtil.InitializeVssClientSettings(HostContext.UserAgents, HostContext.WebProxy);

src/Sdk/Common/Common/RawHttpMessageHandler.cs

@@ -106,6 +106,18 @@ namespace GitHub.Services.Common
         {
             VssTraceActivity traceActivity = VssTraceActivity.Current;
 
+            if (!m_appliedServerCertificateValidationCallbackToTransportHandler &&
+                            request.RequestUri.Scheme == "https")
+            {
+                HttpClientHandler httpClientHandler = m_transportHandler as HttpClientHandler;
+                if (httpClientHandler != null &&
+                    this.Settings.ServerCertificateValidationCallback != null)
+                {
+                    httpClientHandler.ServerCertificateCustomValidationCallback = this.Settings.ServerCertificateValidationCallback;
+                }
+                m_appliedServerCertificateValidationCallbackToTransportHandler = true;
+            }
+
             lock (m_thisLock)
             {
                 // Ensure that we attempt to use the most appropriate authentication mechanism by default.
@@ -291,6 +303,7 @@ namespace GitHub.Services.Common
             }
         }
 
+        private bool m_appliedServerCertificateValidationCallbackToTransportHandler;
         private readonly HttpMessageHandler m_transportHandler;
         private HttpMessageInvoker m_messageInvoker;
         private CredentialWrapper m_credentialWrapper;

src/Sdk/WebApi/WebApi/LaunchContracts.cs

@@ -29,7 +29,7 @@ namespace GitHub.Services.Launch.Contracts
     {
         [DataMember(EmitDefaultValue = false, Name = "authentication")]
         public ActionDownloadAuthenticationResponse Authentication { get; set; }
-        
+
         [DataMember(EmitDefaultValue = false, Name = "package_details")]
         public ActionDownloadPackageDetailsResponse PackageDetails { get; set; }
 
@@ -64,7 +64,7 @@ namespace GitHub.Services.Launch.Contracts
 
 
     [DataContract]
-    public class ActionDownloadPackageDetailsResponse 
+    public class ActionDownloadPackageDetailsResponse
     {
         [DataMember(EmitDefaultValue = false, Name = "version")]
         public string Version { get; set; }
@@ -81,4 +81,25 @@ namespace GitHub.Services.Launch.Contracts
         [DataMember(EmitDefaultValue = false, Name = "actions")]
         public IDictionary<string, ActionDownloadInfoResponse> Actions { get; set; }
     }
+
+    [DataContract]
+    public class ActionDownloadResolutionError
+    {
+        /// <summary>
+        /// The error message associated with the action download error.
+        /// </summary>
+        [DataMember(EmitDefaultValue = false, Name = "message")]
+        public string Message { get; set; }
+    }
+
+    [DataContract]
+    public class ActionDownloadResolutionErrorCollection
+    {
+        /// <summary>
+        /// A mapping of action specifications to their download errors.
+        /// <remarks>The key is the full name of the action plus version, e.g. "actions/checkout@v2".</remarks>
+        /// </summary>
+        [DataMember(EmitDefaultValue = false, Name = "errors")]
+        public IDictionary<string, ActionDownloadResolutionError> Errors { get; set; }
+    }
 }

src/Sdk/WebApi/WebApi/LaunchHttpClient.cs

@@ -2,6 +2,7 @@
 
 using System;
 using System.Linq;
+using System.Net;
 using System.Net.Http;
 using System.Net.Http.Formatting;
 using System.Net.Http.Headers;
@@ -32,11 +33,52 @@ namespace GitHub.Services.Launch.Client
         public async Task<ActionDownloadInfoCollection> GetResolveActionsDownloadInfoAsync(Guid planId, Guid jobId, ActionReferenceList actionReferenceList, CancellationToken cancellationToken)
         {
             var GetResolveActionsDownloadInfoURLEndpoint = new Uri(m_launchServiceUrl, $"/actions/build/{planId.ToString()}/jobs/{jobId.ToString()}/runnerresolve/actions");
-            return ToServerData(await GetLaunchSignedURLResponse<ActionReferenceRequestList, ActionDownloadInfoResponseCollection>(GetResolveActionsDownloadInfoURLEndpoint, ToGitHubData(actionReferenceList), cancellationToken));
+            var response = await GetLaunchSignedURLResponse<ActionReferenceRequestList>(GetResolveActionsDownloadInfoURLEndpoint, ToGitHubData(actionReferenceList), cancellationToken);
+            return ToServerData(await ReadJsonContentAsync<ActionDownloadInfoResponseCollection>(response, cancellationToken));
         }
 
-        // Resolve Actions
-        private async Task<T> GetLaunchSignedURLResponse<R, T>(Uri uri, R request, CancellationToken cancellationToken)
+        public async Task<ActionDownloadInfoCollection> GetResolveActionsDownloadInfoAsyncV2(Guid planId, Guid jobId, ActionReferenceList actionReferenceList, CancellationToken cancellationToken)
+        {
+            var GetResolveActionsDownloadInfoURLEndpoint = new Uri(m_launchServiceUrl, $"/actions/build/{planId.ToString()}/jobs/{jobId.ToString()}/runnerresolve/actions");
+            var response = await GetLaunchSignedURLResponse<ActionReferenceRequestList>(GetResolveActionsDownloadInfoURLEndpoint, ToGitHubData(actionReferenceList), cancellationToken);
+
+            if (response.IsSuccessStatusCode)
+            {
+                // Success response - deserialize the action download info
+                return ToServerData(await ReadJsonContentAsync<ActionDownloadInfoResponseCollection>(response, cancellationToken));
+            }
+
+            var responseError = response.ReasonPhrase ?? "";
+            if (response.StatusCode == HttpStatusCode.UnprocessableEntity)
+            {
+                // 422 response - unresolvable actions, error details are in the body
+                var errors = await ReadJsonContentAsync<ActionDownloadResolutionErrorCollection>(response, cancellationToken);
+                string combinedErrorMessage;
+                if (errors?.Errors != null && errors.Errors.Any())
+                {
+                    combinedErrorMessage = String.Join(". ", errors.Errors.Select(kvp => kvp.Value.Message));
+                }
+                else
+                {
+                    combinedErrorMessage = responseError;
+                }
+
+                throw new UnresolvableActionDownloadInfoException(combinedErrorMessage);
+            }
+            else if (response.StatusCode == HttpStatusCode.TooManyRequests)
+            {
+                // Here we want to add a message so customers don't think it's a rate limit scoped to them
+                // Ideally this would be 500 but the runner retries 500s, which we don't want to do when we're being rate limited
+                // See: https://github.com/github/ecosystem-api/issues/4084
+                throw new NonRetryableActionDownloadInfoException(responseError + " (GitHub has reached an internal rate limit, please try again later)");
+            }
+            else
+            {
+                throw new Exception(responseError);
+            }
+        }
+
+        private async Task<HttpResponseMessage> GetLaunchSignedURLResponse<R>(Uri uri, R request, CancellationToken cancellationToken)
         {
             using (HttpRequestMessage requestMessage = new HttpRequestMessage(HttpMethod.Post, uri))
             {
@@ -46,10 +88,7 @@ namespace GitHub.Services.Launch.Client
                 using (HttpContent content = new ObjectContent<R>(request, m_formatter))
                 {
                     requestMessage.Content = content;
-                    using (var response = await SendAsync(requestMessage, HttpCompletionOption.ResponseContentRead, cancellationToken: cancellationToken))
-                    {
-                        return await ReadJsonContentAsync<T>(response, cancellationToken);
-                    }
+                    return await SendAsync(requestMessage, HttpCompletionOption.ResponseContentRead, cancellationToken: cancellationToken);
                 }
             }
         }

src/Sdk/WebApi/WebApi/ResultsHttpClient.cs

@@ -520,8 +520,8 @@ namespace GitHub.Services.Results.Client
                 Number = r.Order.GetValueOrDefault(),
                 Name = r.Name,
                 Status = ConvertStateToStatus(r.State.GetValueOrDefault()),
-                StartedAt = r.StartTime?.ToString(Constants.TimestampFormat),
-                CompletedAt = r.FinishTime?.ToString(Constants.TimestampFormat),
+                StartedAt = r.StartTime?.ToString(Constants.TimestampFormat, CultureInfo.InvariantCulture),
+                CompletedAt = r.FinishTime?.ToString(Constants.TimestampFormat, CultureInfo.InvariantCulture),
                 Conclusion = ConvertResultToConclusion(r.Result)
             };
         }

src/Test/L0/Listener/ShellScriptSyntaxL0.cs

@@ -0,0 +1,388 @@
+using System;
+using System.Diagnostics;
+using System.IO;
+using System.Runtime.InteropServices;
+using GitHub.Runner.Common.Tests;
+using GitHub.Runner.Sdk;
+using Xunit;
+
+namespace GitHub.Runner.Common.Tests.Listener
+{
+    public sealed class ShellScriptSyntaxL0
+    {
+        // Generic method to test any shell script template for bash syntax errors
+        private void ValidateShellScriptTemplateSyntax(string relativePath, string templateName, bool shouldPass = true, Func<string, string> templateModifier = null)
+        {
+            // Skip on Windows
+            if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
+            {
+                return;
+            }
+
+            try
+            {
+                using (var hc = new TestHostContext(this))
+                {
+                    // Arrange
+                    string rootDirectory = Path.GetFullPath(Path.Combine(TestUtil.GetSrcPath(), ".."));
+                    string templatePath = Path.Combine(rootDirectory, relativePath, templateName);
+                    string tempDir = Path.Combine(Path.GetTempPath(), Guid.NewGuid().ToString());
+                    Directory.CreateDirectory(tempDir);
+                    string tempScriptPath = Path.Combine(tempDir, Path.GetFileNameWithoutExtension(templateName));
+
+                    // Read the template
+                    string template = File.ReadAllText(templatePath);
+                    
+                    // Apply template modifier if provided (for injecting errors)
+                    if (templateModifier != null)
+                    {
+                        template = templateModifier(template);
+                    }
+                    
+                    // Replace common placeholders with valid test values
+                    template = ReplaceCommonPlaceholders(template, rootDirectory, tempDir);
+                    
+                    // Write the processed template to a temporary file
+                    File.WriteAllText(tempScriptPath, template);
+                    
+                    // Make the file executable
+                    var chmodProcess = new Process();
+                    chmodProcess.StartInfo.FileName = "chmod";
+                    chmodProcess.StartInfo.Arguments = $"+x {tempScriptPath}";
+                    chmodProcess.Start();
+                    chmodProcess.WaitForExit();
+                    
+                    // Act - Check syntax using bash -n
+                    var process = new Process();
+                    process.StartInfo.FileName = "bash";
+                    process.StartInfo.Arguments = $"-n {tempScriptPath}";
+                    process.StartInfo.RedirectStandardError = true;
+                    process.StartInfo.UseShellExecute = false;
+                    process.Start();
+                    string errors = process.StandardError.ReadToEnd();
+                    process.WaitForExit();
+                    
+                    // Assert based on expected outcome
+                    if (shouldPass)
+                    {
+                        Assert.Equal(0, process.ExitCode);
+                        Assert.Empty(errors);
+                    }
+                    else
+                    {
+                        Assert.NotEqual(0, process.ExitCode);
+                        Assert.NotEmpty(errors);
+                    }
+                    
+                    // Cleanup
+                    try
+                    {
+                        Directory.Delete(tempDir, true);
+                    }
+                    catch
+                    {
+                        // Best effort cleanup
+                    }
+                }
+            }
+            catch (Exception ex)
+            {
+                Assert.Fail($"Exception during test for {templateName}: {ex}");
+            }
+        }
+
+        // Helper method to replace common placeholders in shell script templates
+        private string ReplaceCommonPlaceholders(string template, string rootDirectory, string tempDir)
+        {
+            // Replace common placeholders
+            template = template.Replace("_PROCESS_ID_", "1234");
+            template = template.Replace("_RUNNER_PROCESS_NAME_", "Runner.Listener");
+            template = template.Replace("_ROOT_FOLDER_", rootDirectory);
+            template = template.Replace("_EXIST_RUNNER_VERSION_", "2.300.0");
+            template = template.Replace("_DOWNLOAD_RUNNER_VERSION_", "2.301.0");
+            template = template.Replace("_UPDATE_LOG_", Path.Combine(tempDir, "update.log"));
+            template = template.Replace("_RESTART_INTERACTIVE_RUNNER_", "0");
+            template = template.Replace("_SERVICEUSERNAME_", "runner");
+            template = template.Replace("_SERVICEPASSWORD_", "password");
+            template = template.Replace("_SERVICEDISPLAYNAME_", "GitHub Actions Runner");
+            template = template.Replace("_SERVICENAME_", "github-runner");
+            template = template.Replace("_SERVICELOGPATH_", Path.Combine(tempDir, "service.log"));
+            template = template.Replace("_RUNNERSERVICEUSERDISPLAYNAME_", "GitHub Actions Runner Service");
+
+            return template;
+        }
+        [Fact]
+        [Trait("Level", "L0")]
+        [Trait("Category", "Runner")]
+        [Trait("SkipOn", "windows")]
+        public void UpdateShTemplateHasValidSyntax()
+        {
+            ValidateShellScriptTemplateSyntax("src/Misc/layoutbin", "update.sh.template");
+        }
+        
+        [Fact]
+        [Trait("Level", "L0")]
+        [Trait("Category", "Runner")]
+        [Trait("SkipOn", "windows")]
+        public void UpdateShTemplateWithErrorsFailsValidation()
+        {
+            ValidateShellScriptTemplateSyntax(
+                "src/Misc/layoutbin", 
+                "update.sh.template",
+                shouldPass: false,
+                templateModifier: template => 
+                {
+                    // Introduce syntax errors
+                    
+                    // 1. Missing 'fi' for an 'if' statement
+                    template = template.Replace("fi\n", "\n");
+                    
+                    // 2. Unbalanced quotes
+                    template = template.Replace("date \"+[%F %T-%4N]", "date \"+[%F %T-%4N");
+                    
+                    // 3. Invalid syntax in if condition
+                    template = template.Replace("if [ $? -ne 0 ]", "if [ $? -ne 0");
+                    
+                    return template;
+                });
+        }
+        
+        [Fact]
+        [Trait("Level", "L0")]
+        [Trait("Category", "Runner")]
+        [Trait("SkipOn", "windows")]
+        public void DarwinSvcShTemplateHasValidSyntax()
+        {
+            ValidateShellScriptTemplateSyntax("src/Misc/layoutbin", "darwin.svc.sh.template");
+        }
+        
+        [Fact]
+        [Trait("Level", "L0")]
+        [Trait("Category", "Runner")]
+        [Trait("SkipOn", "windows")]
+        public void SystemdSvcShTemplateHasValidSyntax()
+        {
+            ValidateShellScriptTemplateSyntax("src/Misc/layoutbin", "systemd.svc.sh.template");
+        }
+        
+        [Fact]
+        [Trait("Level", "L0")]
+        [Trait("Category", "Runner")]
+        [Trait("SkipOn", "windows")]
+        public void RunHelperShTemplateHasValidSyntax()
+        {
+            ValidateShellScriptTemplateSyntax("src/Misc/layoutroot", "run-helper.sh.template");
+        }
+
+        [Fact]
+        [Trait("Level", "L0")]
+        [Trait("Category", "Runner")]
+        [Trait("SkipOn", "windows")]
+        public void UpdateShTemplateHasCorrectVariableReferencesAndIfStructure()
+        {
+            // Skip on Windows
+            if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
+            {
+                return;
+            }
+
+            try
+            {
+                using (var hc = new TestHostContext(this))
+                {
+                    // Arrange
+                    string rootDirectory = Path.GetFullPath(Path.Combine(TestUtil.GetSrcPath(), ".."));
+                    string templatePath = Path.Combine(rootDirectory, "src", "Misc", "layoutbin", "update.sh.template");
+                    
+                    // Read the template
+                    string template = File.ReadAllText(templatePath);
+                    
+                    // Assert
+                    // 1. Check that $restartinteractiverunner is correctly referenced with $ in if condition
+                    Assert.Contains("if [[ \"$currentplatform\" == 'darwin' && $restartinteractiverunner -eq 0 ]];\nthen", template);
+                    
+                    // 2. Check for proper nesting of if statements for node version checks
+                    int nodeVersionCheckLines = 0;
+                    bool foundNode24Block = false;
+                    bool foundNode16Block = false;
+                    bool foundNode12Block = false;
+                    bool hasProperIndentation = false;
+                    
+                    string[] lines = template.Split('\n');
+                    for (int i = 0; i < lines.Length; i++)
+                    {
+                        string line = lines[i];
+                        if (line.Contains("nodever=\"node24\""))
+                        {
+                            foundNode24Block = true;
+                        }
+                        if (line.Contains("nodever=\"node16\""))
+                        {
+                            foundNode16Block = true;
+                        }
+                        if (foundNode16Block && line.Contains("nodever=\"node12\""))
+                        {
+                            foundNode12Block = true;
+                            // Check if we have proper indentation for this nested block
+                            hasProperIndentation = line.StartsWith("                    ");
+                        }
+                        if (line.Contains("Fallback if RunnerService.js was started with"))
+                        {
+                            nodeVersionCheckLines++;
+                        }
+                    }
+                    
+                    // The template has node24 check but there's no "Fallback if RunnerService.js was started with node24" comment for it
+                    // Only the node20, node16, and node12 sections have this comment
+                    Assert.Equal(3, nodeVersionCheckLines);  // node20, node16, node12 
+                    Assert.True(foundNode24Block, "Could not find node24 block");
+                    Assert.True(foundNode16Block, "Could not find node16 block");
+                    Assert.True(foundNode12Block, "Could not find node12 block");
+                    Assert.True(hasProperIndentation, "node12 block is not properly indented");
+                }
+            }
+            catch (Exception ex)
+            {
+                Assert.Fail($"Exception during test: {ex.ToString()}");
+            }
+        }
+        
+        [Fact]
+        [Trait("Level", "L0")]
+        [Trait("Category", "Runner")]
+        [Trait("SkipOn", "osx,linux")]
+        public void UpdateCmdTemplateHasValidSyntax()
+        {
+            // Skip on non-Windows platforms
+            if (!RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
+            {
+                return;
+            }
+
+            ValidateCmdScriptTemplateSyntax("update.cmd.template", shouldPass: true);
+        }
+        
+        [Fact]
+        [Trait("Level", "L0")]
+        [Trait("Category", "Runner")]
+        [Trait("SkipOn", "osx,linux")]
+        public void UpdateCmdTemplateWithErrorsFailsValidation()
+        {
+            // Skip on non-Windows platforms
+            if (!RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
+            {
+                return;
+            }
+            
+            ValidateCmdScriptTemplateSyntax("update.cmd.template", shouldPass: false, 
+                templateModifier: template => 
+                {
+                    // Introduce syntax errors in the template
+                    // 1. Unbalanced parentheses
+                    template = template.Replace("if exist", "if exist (");
+                    
+                    // 2. Unclosed quotes
+                    template = template.Replace("echo", "echo \"Unclosed quote");
+                    
+                    return template;
+                });
+        }
+        
+        private void ValidateCmdScriptTemplateSyntax(string templateName, bool shouldPass, Func<string, string> templateModifier = null)
+        {
+            try
+            {
+                using (var hc = new TestHostContext(this))
+                {
+                    // Arrange
+                    string rootDirectory = Path.GetFullPath(Path.Combine(TestUtil.GetSrcPath(), ".."));
+                    string templatePath = Path.Combine(rootDirectory, "src", "Misc", "layoutbin", templateName);
+                    string tempDir = Path.Combine(Path.GetTempPath(), Guid.NewGuid().ToString());
+                    Directory.CreateDirectory(tempDir);
+                    string tempUpdatePath = Path.Combine(tempDir, Path.GetFileName(templateName).Replace(".template", ""));
+
+                    // Read the template
+                    string template = File.ReadAllText(templatePath);
+                    
+                    // Apply template modifier if provided (for injecting errors)
+                    if (templateModifier != null)
+                    {
+                        template = templateModifier(template);
+                    }
+                    
+                    // Replace the placeholders with valid test values
+                    template = template.Replace("_PROCESS_ID_", "1234");
+                    template = template.Replace("_RUNNER_PROCESS_NAME_", "Runner.Listener.exe");
+                    template = template.Replace("_ROOT_FOLDER_", rootDirectory);
+                    template = template.Replace("_EXIST_RUNNER_VERSION_", "2.300.0");
+                    template = template.Replace("_DOWNLOAD_RUNNER_VERSION_", "2.301.0");
+                    template = template.Replace("_UPDATE_LOG_", Path.Combine(tempDir, "update.log"));
+                    template = template.Replace("_RESTART_INTERACTIVE_RUNNER_", "0");
+                    
+                    // Write the processed template to a temporary file
+                    File.WriteAllText(tempUpdatePath, template);
+                    
+                    // Act - Check syntax using cmd with special flags:
+                    // /v:on - Enable delayed environment variable expansion
+                    // /f:off - Disable file name completion
+                    // /e:on - Enable command extensions
+                    // These flags help validate the syntax without fully executing the script
+                    var process = new Process();
+                    process.StartInfo.FileName = "cmd.exe";
+                    process.StartInfo.Arguments = $"/c /v:on /f:off /e:on \"{tempUpdatePath}\" echo SyntaxCheckOnly && exit /b 0";
+                    process.StartInfo.RedirectStandardError = true;
+                    process.StartInfo.RedirectStandardOutput = true;
+                    process.StartInfo.UseShellExecute = false;
+                    process.Start();
+                    string errors = process.StandardError.ReadToEnd();
+                    string output = process.StandardOutput.ReadToEnd();
+                    process.WaitForExit();
+                    
+                    // Check for mismatched parentheses in the file content
+                    int openParenCount = template.Split('(').Length - 1;
+                    int closeParenCount = template.Split(')').Length - 1;
+                    bool hasMissingParenthesis = openParenCount != closeParenCount;
+                    
+                    // Check for unclosed quotes (simple check - not perfect but catches obvious errors)
+                    int doubleQuoteCount = template.Split('"').Length - 1;
+                    bool hasUnclosedQuotes = doubleQuoteCount % 2 != 0;
+
+                    // Determine if the validation passed
+                    bool validationPassed = process.ExitCode == 0 &&
+                                          string.IsNullOrEmpty(errors) &&
+                                          !hasMissingParenthesis && 
+                                          !hasUnclosedQuotes;
+                    
+                    // Assert based on expected outcome
+                    if (shouldPass)
+                    {
+                        Assert.True(validationPassed, 
+                            $"Template validation should have passed but failed. Exit code: {process.ExitCode}, " +
+                            $"Errors: {errors}, HasMissingParenthesis: {hasMissingParenthesis}, " +
+                            $"HasUnclosedQuotes: {hasUnclosedQuotes}");
+                    }
+                    else
+                    {
+                        Assert.False(validationPassed, 
+                            "Template validation should have failed but passed. " +
+                            "The intentionally introduced syntax errors were not detected.");
+                    }
+                    
+                    // Cleanup
+                    try
+                    {
+                        Directory.Delete(tempDir, true);
+                    }
+                    catch
+                    {
+                        // Best effort cleanup
+                    }
+                }
+            }
+            catch (Exception ex)
+            {
+                Assert.Fail($"Exception during test: {ex.ToString()}");
+            }
+        }
+    }
+}

src/Test/L0/Sdk/LaunchWebApi/LaunchHttpClientL0.cs

@@ -0,0 +1,126 @@
+using GitHub.Actions.RunService.WebApi;
+using GitHub.DistributedTask.WebApi;
+using GitHub.Services.Launch.Client;
+using GitHub.Services.Launch.Contracts;
+using Moq;
+using Moq.Protected;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Net;
+using System.Net.Http;
+using System.Text;
+using System.Threading;
+using System.Threading.Tasks;
+using Xunit;
+
+namespace GitHub.Actions.RunService.WebApi.Tests
+{
+    public sealed class LaunchHttpClientL0
+    {
+        [Fact]
+        public async Task GetResolveActionsDownloadInfoAsync_SuccessResponse()
+        {
+            var baseUrl = new Uri("https://api.github.com/");
+            var planId = Guid.NewGuid();
+            var jobId = Guid.NewGuid();
+            var token = "fake-token";
+
+            var actionReferenceList = new ActionReferenceList
+            {
+                Actions = new List<ActionReference>
+                {
+                    new ActionReference
+                    {
+                        NameWithOwner = "owner1/action1",
+                        Ref = "0123456789"
+                    }
+                }
+            };
+
+            var responseContent = @"{
+                ""actions"": {
+                    ""owner1/action1@0123456789"": {
+                        ""name"": ""owner1/action1"",
+                        ""resolved_name"": ""owner1/action1"",
+                        ""resolved_sha"": ""0123456789"",
+                        ""version"": ""0123456789"",
+                        ""zip_url"": ""https://github.com/owner1/action1/zip"",
+                        ""tar_url"": ""https://github.com/owner1/action1/tar""
+                    }
+                }
+            }";
+
+            var httpResponse = new HttpResponseMessage(HttpStatusCode.OK)
+            {
+                Content = new StringContent(responseContent, Encoding.UTF8, "application/json"),
+                RequestMessage = new HttpRequestMessage()
+                {
+                    RequestUri = new Uri($"{baseUrl}actions/build/{planId}/jobs/{jobId}/runnerresolve/actions")
+                }
+            };
+
+            var mockHandler = new Mock<HttpMessageHandler>();
+            mockHandler.Protected().Setup<Task<HttpResponseMessage>>("SendAsync", ItExpr.IsAny<HttpRequestMessage>(), ItExpr.IsAny<CancellationToken>())
+                .ReturnsAsync(httpResponse);
+
+            var client = new LaunchHttpClient(baseUrl, mockHandler.Object, token, false);
+            var result = await client.GetResolveActionsDownloadInfoAsyncV2(planId, jobId, actionReferenceList, CancellationToken.None);
+
+            // Assert
+            Assert.NotNull(result);
+            Assert.NotEmpty(result.Actions);
+            Assert.Equal(actionReferenceList.Actions.Count, result.Actions.Count);
+            Assert.True(result.Actions.ContainsKey("owner1/action1@0123456789"));
+        }
+
+        [Fact]
+        public async Task GetResolveActionsDownloadInfoAsync_UnprocessableEntityResponse()
+        {
+            var baseUrl = new Uri("https://api.github.com/");
+            var planId = Guid.NewGuid();
+            var jobId = Guid.NewGuid();
+            var token = "fake-token";
+
+            var actionReferenceList = new ActionReferenceList
+            {
+                Actions = new List<ActionReference>
+                {
+                    new ActionReference
+                    {
+                        NameWithOwner = "owner1/action1",
+                        Ref = "0123456789"
+                    }
+                }
+            };
+
+            var responseContent = @"{
+                ""errors"": {
+                    ""owner1/invalid-action@0123456789"": {
+                        ""message"": ""Unable to resolve action 'owner1/invalid-action@0123456789', repository not found""
+                    }
+                }
+            }";
+
+            var httpResponse = new HttpResponseMessage(HttpStatusCode.UnprocessableEntity)
+            {
+                Content = new StringContent(responseContent, Encoding.UTF8, "application/json"),
+                RequestMessage = new HttpRequestMessage()
+                {
+                    RequestUri = new Uri($"{baseUrl}actions/build/{planId}/jobs/{jobId}/runnerresolve/actions")
+                }
+            };
+
+            var mockHandler = new Mock<HttpMessageHandler>();
+            mockHandler.Protected().Setup<Task<HttpResponseMessage>>("SendAsync", ItExpr.IsAny<HttpRequestMessage>(), ItExpr.IsAny<CancellationToken>())
+                .ReturnsAsync(httpResponse);
+
+            var client = new LaunchHttpClient(baseUrl, mockHandler.Object, token, false);
+
+            var exception = await Assert.ThrowsAsync<UnresolvableActionDownloadInfoException>(
+                () => client.GetResolveActionsDownloadInfoAsyncV2(planId, jobId, actionReferenceList, CancellationToken.None));
+            
+            Assert.Contains("repository not found", exception.Message);
+        }
+    }
+}

src/Test/L0/Worker/ActionManagerL0.cs

@@ -1659,6 +1659,76 @@ runs:
                 Teardown();
             }
         }
+
+         [Fact]
+        [Trait("Level", "L0")]
+        [Trait("Category", "Worker")]
+        public void LoadsNode24ActionDefinition()
+        {
+            try
+            {
+                // Arrange.
+                Setup();
+                const string Content = @"
+# Container action
+name: 'Hello World'
+description: 'Greet the world and record the time'
+author: 'GitHub'
+inputs:
+  greeting: # id of input
+    description: 'The greeting we choose - will print ""{greeting}, World!"" on stdout'
+    required: true
+    default: 'Hello'
+  entryPoint: # id of input
+    description: 'optional docker entrypoint overwrite.'
+    required: false
+outputs:
+  time: # id of output
+    description: 'The time we did the greeting'
+icon: 'hello.svg' # vector art to display in the GitHub Marketplace
+color: 'green' # optional, decorates the entry in the GitHub Marketplace
+runs:
+  using: 'node24'
+  main: 'task.js'
+";
+                Pipelines.ActionStep instance;
+                string directory;
+                CreateAction(yamlContent: Content, instance: out instance, directory: out directory);
+
+                // Act.
+                Definition definition = _actionManager.LoadAction(_ec.Object, instance);
+
+                // Assert.
+                Assert.NotNull(definition);
+                Assert.Equal(directory, definition.Directory);
+                Assert.NotNull(definition.Data);
+                Assert.NotNull(definition.Data.Inputs); // inputs
+                Dictionary<string, string> inputDefaults = new(StringComparer.OrdinalIgnoreCase);
+                foreach (var input in definition.Data.Inputs)
+                {
+                    var name = input.Key.AssertString("key").Value;
+                    var value = input.Value.AssertScalar("value").ToString();
+
+                    _hc.GetTrace().Info($"Default: {name} = {value}");
+                    inputDefaults[name] = value;
+                }
+
+                Assert.Equal(2, inputDefaults.Count);
+                Assert.True(inputDefaults.ContainsKey("greeting"));
+                Assert.Equal("Hello", inputDefaults["greeting"]);
+                Assert.True(string.IsNullOrEmpty(inputDefaults["entryPoint"]));
+                Assert.NotNull(definition.Data.Execution); // execution
+
+                Assert.NotNull(definition.Data.Execution as NodeJSActionExecutionData);
+                Assert.Equal("task.js", (definition.Data.Execution as NodeJSActionExecutionData).Script);
+                Assert.Equal("node24", (definition.Data.Execution as NodeJSActionExecutionData).NodeVersion);
+            }
+            finally
+            {
+                Teardown();
+            }
+        }
+        
         [Fact]
         [Trait("Level", "L0")]
         [Trait("Category", "Worker")]
@@ -2411,8 +2481,8 @@ runs:
                 });
 
             _launchServer = new Mock<ILaunchServer>();
-            _launchServer.Setup(x => x.ResolveActionsDownloadInfoAsync(It.IsAny<Guid>(), It.IsAny<Guid>(), It.IsAny<ActionReferenceList>(), It.IsAny<CancellationToken>()))
-                .Returns((Guid planId, Guid jobId, ActionReferenceList actions, CancellationToken cancellationToken) =>
+            _launchServer.Setup(x => x.ResolveActionsDownloadInfoAsync(It.IsAny<Guid>(), It.IsAny<Guid>(), It.IsAny<ActionReferenceList>(), It.IsAny<CancellationToken>(), It.IsAny<bool>()))
+                .Returns((Guid planId, Guid jobId, ActionReferenceList actions, CancellationToken cancellationToken, bool displayHelpfulActionsDownloadErrors) =>
                 {
                     var result = new ActionDownloadInfoCollection { Actions = new Dictionary<string, ActionDownloadInfo>() };
                     foreach (var action in actions.Actions)

src/Test/L0/Worker/ActionManifestManagerL0.cs

@@ -502,6 +502,49 @@ namespace GitHub.Runner.Common.Tests.Worker
             }
         }
 
+         [Fact]
+        [Trait("Level", "L0")]
+        [Trait("Category", "Worker")]
+        public void Load_Node24Action()
+        {
+            try
+            {
+                //Arrange
+                Setup();
+
+                var actionManifest = new ActionManifestManager();
+                actionManifest.Initialize(_hc);
+
+                //Act
+                var result = actionManifest.Load(_ec.Object, Path.Combine(TestUtil.GetTestDataPath(), "node24action.yml"));
+
+                //Assert
+                Assert.Equal("Hello World", result.Name);
+                Assert.Equal("Greet the world and record the time", result.Description);
+                Assert.Equal(2, result.Inputs.Count);
+                Assert.Equal("greeting", result.Inputs[0].Key.AssertString("key").Value);
+                Assert.Equal("Hello", result.Inputs[0].Value.AssertString("value").Value);
+                Assert.Equal("entryPoint", result.Inputs[1].Key.AssertString("key").Value);
+                Assert.Equal("", result.Inputs[1].Value.AssertString("value").Value);
+                Assert.Equal(1, result.Deprecated.Count);
+
+                Assert.True(result.Deprecated.ContainsKey("greeting"));
+                result.Deprecated.TryGetValue("greeting", out string value);
+                Assert.Equal("This property has been deprecated", value);
+
+                Assert.Equal(ActionExecutionType.NodeJS, result.Execution.ExecutionType);
+
+                var nodeAction = result.Execution as NodeJSActionExecutionData;
+
+                Assert.Equal("main.js", nodeAction.Script);
+                Assert.Equal("node24", nodeAction.NodeVersion);
+            }
+            finally
+            {
+                Teardown();
+            }
+        }
+
         [Fact]
         [Trait("Level", "L0")]
         [Trait("Category", "Worker")]
@@ -758,7 +801,7 @@ namespace GitHub.Runner.Common.Tests.Worker
                 //Assert
                 var err = Assert.Throws<ArgumentException>(() => actionManifest.Load(_ec.Object, action_path));
                 Assert.Contains($"Failed to load {action_path}", err.Message);
-                _ec.Verify(x => x.AddIssue(It.Is<Issue>(s => s.Message.Contains("Missing 'using' value. 'using' requires 'composite', 'docker', 'node12', 'node16' or 'node20'.")), It.IsAny<ExecutionContextLogOptions>()), Times.Once);
+                _ec.Verify(x => x.AddIssue(It.Is<Issue>(s => s.Message.Contains("Missing 'using' value. 'using' requires 'composite', 'docker', 'node12', 'node16', 'node20' or 'node24'.")), It.IsAny<ExecutionContextLogOptions>()), Times.Once);
             }
             finally
             {

src/Test/L0/Worker/HandlerFactoryL0.cs

@@ -33,6 +33,7 @@ namespace GitHub.Runner.Common.Tests.Worker
         [InlineData("node12", "node20")]
         [InlineData("node16", "node20")]
         [InlineData("node20", "node20")]
+        [InlineData("node24", "node24")]
         public void IsNodeVersionUpgraded(string inputVersion, string expectedVersion)
         {
             using (TestHostContext hc = CreateTestContext())
@@ -41,7 +42,7 @@ namespace GitHub.Runner.Common.Tests.Worker
                 var hf = new HandlerFactory();
                 hf.Initialize(hc);
 
-                // Server Feature Flag
+                // Setup variables
                 var variables = new Dictionary<string, VariableValue>();
                 Variables serverVariables = new(hc, variables);
 
@@ -72,5 +73,48 @@ namespace GitHub.Runner.Common.Tests.Worker
                 Assert.Equal(expectedVersion, handler.Data.NodeVersion);
             }
         }
+
+      
+
+        [Fact]
+        [Trait("Level", "L0")]
+        [Trait("Category", "Worker")]
+        public void Node24ExplicitlyRequested_HonoredByDefault()
+        {
+            using (TestHostContext hc = CreateTestContext())
+            {
+                // Arrange.
+                var hf = new HandlerFactory();
+                hf.Initialize(hc);
+
+                // Basic variables setup
+                var variables = new Dictionary<string, VariableValue>();
+                Variables serverVariables = new(hc, variables);
+
+                _ec.Setup(x => x.Global).Returns(new GlobalContext()
+                {
+                    Variables = serverVariables,
+                    EnvironmentVariables = new Dictionary<string, string>()
+                });
+
+                // Act - Node 24 explicitly requested in action.yml
+                var data = new NodeJSActionExecutionData();
+                data.NodeVersion = "node24";
+                var handler = hf.Create(
+                    _ec.Object,
+                    new ScriptReference(),
+                    new Mock<IStepHost>().Object,
+                    data,
+                    new Dictionary<string, string>(),
+                    new Dictionary<string, string>(),
+                    new Variables(hc, new Dictionary<string, VariableValue>()),
+                    "",
+                    new List<JobExtensionRunner>()
+                ) as INodeScriptActionHandler;
+
+                // Assert - should be node24 as requested
+                Assert.Equal("node24", handler.Data.NodeVersion);
+            }
+        }
     }
 }

src/Test/L0/Worker/Handlers/NodeHandlerL0.cs

@@ -0,0 +1,35 @@
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Runtime.CompilerServices;
+using System.Threading;
+using System.Threading.Tasks;
+using GitHub.DistributedTask.WebApi;
+using GitHub.Runner.Sdk;
+using GitHub.Runner.Worker;
+using GitHub.Runner.Worker.Handlers;
+using Moq;
+using Xunit;
+
+namespace GitHub.Runner.Common.Tests.Worker.Handlers
+{
+    public sealed class NodeHandlerL0
+    {
+        [Fact]
+        [Trait("Level", "L0")]
+        [Trait("Category", "Worker")]
+        public void NodeJSActionExecutionDataSupportsNode24()
+        {
+            // Create NodeJSActionExecutionData with node24
+            var nodeJSData = new NodeJSActionExecutionData
+            {
+                NodeVersion = "node24",
+                Script = "test.js"
+            };
+            
+            // Act & Assert
+            Assert.Equal("node24", nodeJSData.NodeVersion);
+            Assert.Equal(ActionExecutionType.NodeJS, nodeJSData.ExecutionType);
+        }
+    }
+}

src/Test/L0/Worker/StepHostL0.cs

@@ -162,6 +162,60 @@ namespace GitHub.Runner.Common.Tests.Worker
                 Assert.Equal("node20", nodeVersion);
             }
         }
+
+        [Fact]
+        [Trait("Level", "L0")]
+        [Trait("Category", "Worker")]
+        public async Task DetermineNode24RuntimeVersionInAlpineContainerAsync()
+        {
+            using (TestHostContext hc = CreateTestContext())
+            {
+                // Arrange.
+                var sh = new ContainerStepHost();
+                sh.Initialize(hc);
+                sh.Container = new ContainerInfo() { ContainerId = "1234abcd" };
+
+                _dc.Setup(d => d.DockerExec(_ec.Object, It.IsAny<string>(), It.IsAny<string>(), It.IsAny<string>(), It.IsAny<List<string>>()))
+                    .Callback((IExecutionContext ec, string id, string options, string command, List<string> output) =>
+                    {
+                        output.Add("alpine");
+                    })
+                    .ReturnsAsync(0);
+
+                // Act.
+                var nodeVersion = await sh.DetermineNodeRuntimeVersion(_ec.Object, "node24");
+
+                // Assert.
+                Assert.Equal("node24_alpine", nodeVersion);
+            }
+        }
+
+        [Fact]
+        [Trait("Level", "L0")]
+        [Trait("Category", "Worker")]
+        public async Task DetermineNode24RuntimeVersionInUnknownContainerAsync()
+        {
+            using (TestHostContext hc = CreateTestContext())
+            {
+                // Arrange.
+                var sh = new ContainerStepHost();
+                sh.Initialize(hc);
+                sh.Container = new ContainerInfo() { ContainerId = "1234abcd" };
+
+                _dc.Setup(d => d.DockerExec(_ec.Object, It.IsAny<string>(), It.IsAny<string>(), It.IsAny<string>(), It.IsAny<List<string>>()))
+                    .Callback((IExecutionContext ec, string id, string options, string command, List<string> output) =>
+                    {
+                        output.Add("github");
+                    })
+                    .ReturnsAsync(0);
+
+                // Act.
+                var nodeVersion = await sh.DetermineNodeRuntimeVersion(_ec.Object, "node24");
+
+                // Assert.
+                Assert.Equal("node24", nodeVersion);
+            }
+        }
 #endif
     }
 }

src/Test/L0/Worker/StepHostNodeVersionL0.cs

@@ -0,0 +1,63 @@
+using GitHub.Runner.Worker;
+using GitHub.Runner.Worker.Handlers;
+using Moq;
+using System;
+using System.Runtime.InteropServices;
+using Xunit;
+
+namespace GitHub.Runner.Common.Tests.Worker
+{
+    public sealed class StepHostNodeVersionL0
+    {
+        private Mock<IExecutionContext> _ec;
+        private DefaultStepHost _defaultStepHost;
+
+        public StepHostNodeVersionL0()
+        {
+            _ec = new Mock<IExecutionContext>();
+            _defaultStepHost = new DefaultStepHost();
+        }
+
+        [Fact]
+        [Trait("Level", "L0")]
+        [Trait("Category", "Worker")]
+        public void CheckNodeVersionForArm32_Node24OnArm32Linux()
+        {
+            // Test via NodeUtil directly
+            string preferredVersion = "node24";
+            var (nodeVersion, warningMessage) = Common.Util.NodeUtil.CheckNodeVersionForLinuxArm32(preferredVersion);
+
+            // On ARM32 Linux, we should fall back to node20
+            bool isArm32 = RuntimeInformation.ProcessArchitecture == Architecture.Arm ||
+                          Environment.GetEnvironmentVariable("PROCESSOR_ARCHITECTURE")?.Contains("ARM") == true;
+            bool isLinux = RuntimeInformation.IsOSPlatform(OSPlatform.Linux);
+
+            if (isArm32 && isLinux)
+            {
+                // Should downgrade to node20 on ARM32 Linux
+                Assert.Equal("node20", nodeVersion);
+                Assert.NotNull(warningMessage);
+                Assert.Contains("Node 24 is not supported on Linux ARM32 platforms", warningMessage);
+            }
+            else
+            {
+                // On non-ARM32 platforms, should pass through the version unmodified
+                Assert.Equal("node24", nodeVersion);
+                Assert.Null(warningMessage);
+            }
+        }
+
+        [Fact]
+        [Trait("Level", "L0")]
+        [Trait("Category", "Worker")]
+        public void CheckNodeVersionForArm32_PassThroughNonNode24Versions()
+        {
+            string preferredVersion = "node20";
+            var (nodeVersion, warningMessage) = Common.Util.NodeUtil.CheckNodeVersionForLinuxArm32(preferredVersion);
+
+            // Should never modify the version for non-node24 inputs
+            Assert.Equal("node20", nodeVersion);
+            Assert.Null(warningMessage);
+        }
+    }
+}

src/Test/TestData/node24action.yml

@@ -0,0 +1,20 @@
+name: 'Hello World'
+description: 'Greet the world and record the time'
+author: 'Test Corporation'
+inputs: 
+  greeting: # id of input
+    description: 'The greeting we choose - will print ""{greeting}, World!"" on stdout'
+    required: true
+    default: 'Hello'
+    deprecationMessage: 'This property has been deprecated'
+  entryPoint: # id of input
+    description: 'optional docker entrypoint overwrite.'
+    required: false
+outputs:
+  time: # id of output
+    description: 'The time we did the greeting'
+icon: 'hello.svg' # vector art to display in the GitHub Marketplace
+color: 'green' # optional, decorates the entry in the GitHub Marketplace
+runs:
+  using: 'node24'
+  main: 'main.js'

src/dev.sh

@@ -17,7 +17,7 @@ LAYOUT_DIR="$SCRIPT_DIR/../_layout"
 DOWNLOAD_DIR="$SCRIPT_DIR/../_downloads/netcore2x"
 PACKAGE_DIR="$SCRIPT_DIR/../_package"
 DOTNETSDK_ROOT="$SCRIPT_DIR/../_dotnetsdk"
-DOTNETSDK_VERSION="8.0.408"
+DOTNETSDK_VERSION="8.0.412"
 DOTNETSDK_INSTALLDIR="$DOTNETSDK_ROOT/$DOTNETSDK_VERSION"
 RUNNER_VERSION=$(cat runnerversion)
 

src/global.json

@@ -1,5 +1,5 @@
 {
   "sdk": {
-    "version": "8.0.408"
+    "version": "8.0.412"
   }
 }

src/runnerversion

@@ -1 +1 @@
-2.324.0
+2.327.0