diff --git a/build/azure-pipelines/os-monaco-core-pipeline.yml b/build/azure-pipelines/os-monaco-core-pipeline.yml
index 5f81dca2dadc1..257514f163e8f 100644
--- a/build/azure-pipelines/os-monaco-core-pipeline.yml
+++ b/build/azure-pipelines/os-monaco-core-pipeline.yml
@@ -1,5 +1,5 @@
 pool:
-  vmImage: 'windows-latest'
+  vmImage: 'windows-2019'
 
 trigger:
   branches:
@@ -19,7 +19,7 @@ stages:
     steps:
     - task: NodeTool@0
       inputs:
-        versionSpec: "12.14.1"
+        versionSpec: "14.17.3"
     - script: |
         yarn
     - script: |
@@ -37,7 +37,7 @@ stages:
   - deployment: Deploy
     displayName: 'Deploy to npm private repository and creates a git release'
     pool:
-      vmImage: 'windows-latest'
+      vmImage: 'windows-2019'
     environment: Automatic-Release
     strategy:
       runOnce: