Azure Virtual Desktop - Black Screens on logins - What we've tried so far

We also have a Microsoft ticket open, because even after installing the fix we still had problems with the login in connection with the AAD.Broker plugin.

Microsoft has now written me this workaround, which we will implement today:

"""

RCA seems to be understood, we hit the deadlock in auto repair due to a corruption that took place due to the 7D-known-Issue (10D was the resolution for). 

One workaround that has brought good result is a combination of: 

a.) Redeployment of Hosts with 10D 

b.) Run this script as part of the UserLogon

"Add-AppxPackage -Register -Path "C:\Windows\SystemApps\Microsoft.AAD.BrokerPlugin_cw5n1h2txyewy\AppxManifest.xml" -DisableDevelopmentMode"

Background information: 

When we fall into the Event ID 10 - Scenario, we are in the progress of "AutoRepair" that will try to do additional steps that could lead to the deadlock. By calling this as a "User Logon Script" we avoid the auto repair and should see an improvement. 

"""

Let's see if it gets better.