diff --git a/windows/deployment/do/waas-delivery-optimization-faq.yml b/windows/deployment/do/waas-delivery-optimization-faq.yml
index 1a0f413fd5..4cccd98fa6 100644
--- a/windows/deployment/do/waas-delivery-optimization-faq.yml
+++ b/windows/deployment/do/waas-delivery-optimization-faq.yml
@@ -81,6 +81,7 @@ sections:
           Delivery Optimization metadata:
           
           - `http://emdl.ws.microsoft.com`
+          - `http://download.windowsupdate.com`
           - `http://*.dl.delivery.mp.microsoft.com`
 
           Windows Update and Microsoft Store backend services and Windows Update and Microsoft Store payloads