WVD logon issues. The Group Policy Client Service failed the sign-in. Access is denied.

[Dale Hayter]

Hi. We have a mutli-session Win10 WVD farm up and running. We are running 1909 with the latest quality updates applied. FSLogix profile container is being used. 

We are seeing intermittent issues with users not being able to login. They are being presented with the error:

"The Group Policy Client Service failed the sign-in. Access is denied"

From investigation, cant see anything appropriate in the event logs. Anyone seen this issue before?

[#2]

Is it consistent repro on the same sessionhosts? Can you please share the connection activityid that produce this error?
From the activityId, find out the session host, check the sessionhost eventlog for any FSLogix, user profiles errors. Please share your findings.