Merge branch 'master' of https://github.com/MicrosoftDocs/azure-docs-pr into heidist-search

Author: HeidiSteen

articles/active-directory/authentication/howto-mfa-nps-extension.md

@@ -75,6 +75,7 @@ The NPS server needs to be able to communicate with the following URLs over port
 
 - https:\//adnotifications.windowsazure.com
 - https:\//login.microsoftonline.com
+- https:\//credentials.azure.com
 
 Additionally, connectivity to the following URLs is required to complete the [setup of the adapter using the provided PowerShell script](#run-the-powershell-script)