Merge pull request #111041 from Heidilohr/work-overview-tag

Emergency update to overview for service failures.

Author: PRMerger19

articles/virtual-desktop/overview.md

@@ -6,7 +6,7 @@ author: Heidilohr
 
 ms.service: virtual-desktop
 ms.topic: overview
-ms.date: 03/19/2020
+ms.date: 04/10/2020
 ms.author: helohr
 manager: lizross
 ---
@@ -94,10 +94,8 @@ The Azure virtual machines you create for Windows Virtual Desktop must have acce
 |catalogartifact.azureedge.net|443|Azure Marketplace|AzureCloud|
 |kms.core.windows.net|1688|Windows activation|Internet|
 
-
-
 >[!IMPORTANT]
->Opening these URLs is essential for a reliable Windows Virtual Desktop deployment. Blocking access to these URLs is unsupported and will affect service functionality. These URLs only correspond to Windows Virtual Desktop sites and resources, and don't include URLs for other services like Azure Active Directory.
+>We recommend you use the service tags instead of URLs in most cases to prevent service issues. Unblocking these URLs is essential for a reliable Windows Virtual Desktop deployment. Blocking access to these URLs is unsupported and will affect service functionality. These URLs only correspond to Windows Virtual Desktop sites and resources, and don't include URLs for other services like Azure Active Directory.
 
 The following table lists optional URLs that your Azure virtual machines can have access to: