Forum Discussion

Brass Contributor

Sep 19, 2024

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

TLDR - Azure Virtual Desktop Black Screens. Could be 2 Min long, could be much longer. Tried removing stuck profiles, spun up all new VMs to see if that would fix it, finally disabled an applicatio...

paulosilva_PI

Copper Contributor

Oct 01, 2024

JPlendo

Microsoft has advised that the fix will be released in the October patch, meanwhile a KIR (Known Issue Rollback) has been release to fix this Appx Crash issue.

Please https://download.microsoft.com/download/a7ee9dc7-dfc9-498d-808c-86f2c046a55d/Windows%2010 20H2, 21H1, 21H2 and 22H2 KB5040525 241001_01051 Known Issue Rollback.msi this KIR and follow instructions https://learn.microsoft.com/en-us/troubleshoot/windows-client/group-policy/use-group-policy-to-deploy-known-issue-rollback

This will install a new computer Local Group Policy which looks like this,

...which then need to be set as disabled, please reboot and you'll see that the Appx Crash will stop.

This has been the solution from Microsoft to deal with the issue until next windows patch release.

Give it a try and let me know if it works.

AnAverageHuman

Copper Contributor

Oct 10, 2024

We have a couple hundred Win10 multisession AVD hosts and ~1000 users daily. Black screens were relatively intermittent compared to some of the reports here in this thread but our support team did have to deal with the few that appeared.
Tuesday this week, updated the VM we use for creating base images and included the KIR via local policy.
Rebuilt all shared host pools from updated image Tuesday evening.
Reports Wednesday were there were zero black screen tickets or calls.
Will continue to be patient for the actual fix but this mitigation seems to have made a positive impact.
Thanks for the links to KIR download and instructions paulosilva_PI !