diff --git a/images.CI/azure-pipelines/ubuntu1604.yml b/images.CI/azure-pipelines/ubuntu1604.yml
index b19e79a12..8f6dcef22 100644
--- a/images.CI/azure-pipelines/ubuntu1604.yml
+++ b/images.CI/azure-pipelines/ubuntu1604.yml
@@ -1,10 +1,10 @@
-# schedules:
-# - cron: "0 0 * * *"
-#   displayName: Daily
-#   branches:
-#     include:
-#     - master
-#   always: true
+schedules:
+- cron: "0 0 * * *"
+  displayName: Daily
+  branches:
+    include:
+    - master
+  always: true
 
 trigger: none
 pr:
diff --git a/images.CI/azure-pipelines/ubuntu1804.yml b/images.CI/azure-pipelines/ubuntu1804.yml
index db8acfd9b..998ba42e6 100644
--- a/images.CI/azure-pipelines/ubuntu1804.yml
+++ b/images.CI/azure-pipelines/ubuntu1804.yml
@@ -1,10 +1,10 @@
-# schedules:
-# - cron: "0 0 * * *"
-#   displayName: Daily
-#   branches:
-#     include:
-#     - master
-#   always: true
+schedules:
+- cron: "0 0 * * *"
+  displayName: Daily
+  branches:
+    include:
+    - master
+  always: true
 
 trigger: none
 pr:
diff --git a/images.CI/azure-pipelines/windows2016.yml b/images.CI/azure-pipelines/windows2016.yml
index eaac2d1bb..667b30bd7 100644
--- a/images.CI/azure-pipelines/windows2016.yml
+++ b/images.CI/azure-pipelines/windows2016.yml
@@ -1,10 +1,10 @@
-# schedules:
-# - cron: "0 0 * * *"
-#   displayName: Daily
-#   branches:
-#     include:
-#     - master
-#   always: true
+schedules:
+- cron: "0 0 * * *"
+  displayName: Daily
+  branches:
+    include:
+    - master
+  always: true
 
 trigger: none
 pr:
diff --git a/images.CI/azure-pipelines/windows2019.yml b/images.CI/azure-pipelines/windows2019.yml
index ebbf68e7e..508fa12b3 100644
--- a/images.CI/azure-pipelines/windows2019.yml
+++ b/images.CI/azure-pipelines/windows2019.yml
@@ -1,10 +1,10 @@
-# schedules:
-# - cron: "0 0 * * *"
-#   displayName: Daily
-#   branches:
-#     include:
-#     - master
-#   always: true
+schedules:
+- cron: "0 0 * * *"
+  displayName: Daily
+  branches:
+    include:
+    - master
+  always: true
 
 trigger: none
 pr: