diff --git a/images/win/Windows2016-Azure.json b/images/win/Windows2016-Azure.json
index 7a3b7633..6aa1423c 100644
--- a/images/win/Windows2016-Azure.json
+++ b/images/win/Windows2016-Azure.json
@@ -182,6 +182,9 @@
         },
         {
             "type": "powershell",
+            "environment_vars":[
+                "TOOLSET_JSON_PATH={{user `toolset_json_path`}}"
+            ],
             "scripts":[
                 "{{ template_dir }}/scripts/Installers/Install-Nuget.ps1",
                 "{{ template_dir }}/scripts/Installers/Install-Wix.ps1",
diff --git a/images/win/Windows2019-Azure.json b/images/win/Windows2019-Azure.json
index 2d58ce23..515caba9 100644
--- a/images/win/Windows2019-Azure.json
+++ b/images/win/Windows2019-Azure.json
@@ -189,6 +189,9 @@
         },
         {
             "type": "powershell",
+            "environment_vars":[
+                "TOOLSET_JSON_PATH={{user `toolset_json_path`}}"
+            ],
             "scripts":[
                 "{{ template_dir }}/scripts/Installers/Install-Nuget.ps1",
                 "{{ template_dir }}/scripts/Installers/Install-Wix.ps1",