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JPlendo's avatar
JPlendo
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...
JoeriK1285's avatar
JoeriK1285
Copper Contributor
Oct 12, 2024

It seems that adding more AVD session hosts has stabilized the situation in our case.

It seems that the “appx stack” starts crashing when the stack is under load/stress. This happens during logon storm (users logging on at the same time in the morning) and also when the host has more than +/- 10 users working on it.

To mitigate this, we make sure we have plenty of AVD session hosts so all of them are online during the logon storm + we make sure that a AVD session host has max. 10 users connected to it.

 

We also applied the KIR (https://download.microsoft.com/download/a7ee9dc7-dfc9-498d-808c-86f2c046a55d/Windows%2010 20H2, 21H1, 21H2 and 22H2 KB5040525 241001_01051 Known Issue Rollback.msi) in the master image and redeployed all our AVD session hosts from that new master image version.

Hopefully MSFT comes up with the fix soon so we can go back to the previous situation as this mitigation has some impact on the costs.

djordan1910's avatar
djordan1910
Copper Contributor
Oct 14, 2024
Another thing to note... I dont know where everybody has their session clients timeouts at. We were at 1 hour no activity - logout, 15 minutes no activity after disconnect - logout. Even with the KIR in place, we noticed 2 or 3 daily (~200 users) who would raise a ticket about a black screen or inability to login to Outlook thick client. This morning we changed to a 2 hour no activity logout and 1 hour after disconnect logout and we havent had a complaint all day.. I dont know if this is even relevant, just relaying things as we try them.

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