diff --git a/build/pipelines/templates/build-console-steps.yml b/build/pipelines/templates/build-console-steps.yml
index 4a3adcb40544..fd75a78a8bdb 100644
--- a/build/pipelines/templates/build-console-steps.yml
+++ b/build/pipelines/templates/build-console-steps.yml
@@ -41,7 +41,9 @@ steps:
     configuration: '$(BuildConfiguration)'
     msbuildArgs: "${{ parameters.additionalBuildArguments }}"
     clean: true
-    maximumCpuCount: true
+    # The build agents cannot currently support parallel build due to the
+    # memory requirements of our PCH files.
+    maximumCpuCount: false
 
 - task: PowerShell@2
   displayName: 'Check MSIX for common regressions'