diff --git a/azure-pipelines.yml b/azure-pipelines.yml
index f97960d..0d9c762 100644
--- a/azure-pipelines.yml
+++ b/azure-pipelines.yml
@@ -107,6 +107,7 @@ stages:
   - job: WindowsBuild
     displayName: 'Build on Windows'
     dependsOn: SetupEnvironment
+    condition: ne(variables['Build.Reason'], 'PullRequest')
     variables:
       folderChanged: $[ dependencies.SetupEnvironment.outputs['diffStep.folderChanged'] ]
     pool: