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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...
djordan1910's avatar
djordan1910
Copper Contributor
Oct 23, 2024
this thread has been quietttttt today. Any reports from anyone who installed the CU?
Robert_Hurd's avatar
Robert_Hurd
Brass Contributor
Oct 23, 2024
We have left the KIR in place and installed the preview KB. We still had one instance of outlook and one instance of black screen. This is over 20 host servers in one pool.
  • AdamMc's avatar
    AdamMc
    Copper Contributor
    Oct 23, 2024
    Preview update installed while the KIR is in place? That is good to know
    • chrismaga's avatar
      chrismaga
      Copper Contributor
      Oct 24, 2024
      Hello, same problems here. Did someone installed the preview update KB5045594 which fixed the problem?
      • parentcharles's avatar
        parentcharles
        Copper Contributor
        Oct 24, 2024

        chrismaga 

        Hello, so here's our experience with the issue. 

        The CU seems to have fixed the root cause issue of black screen/app readiness/AppxSVC, but did not repair or rollback any of the corruption that has been done. In other words, the issue could still persist on a per-user basis depending on which host it would connect because of the resulting corruptions. 

         

        We had a chicken and eggs sort of issue where the user AADBroker Plugin was corrupted and some hosts weren't able to redeploy the AADBroker Plugin which would then recreate the black screen issue.

         

        We tried to repair the integrity of the hosts, we tried to reinstall all APPX packages. 
        We haven't found anything that could make an unstable host stable again. 

         

        The funny part is that if a user that has corruption have his profile clean and reconnect to a host which can redeploy the AADBroker, then the issue was resolved, but it was a pain to define which hosts were corrupted and which weren't. 

         

        Because we didn't want any lingering issues or corruption, we redeployed a new image, which has all the patches, and we're hoping in doesn't come back. With the new image, we can repair the user AADBroker if it persists too. 

         

        Hope this is clear. 

        And btw, we have a case with Microsoft and we haven't received a single solution attempt. 

  • KevHal's avatar
    KevHal
    Iron Contributor
    Oct 23, 2024

    This should not be the case. With the KIR and the preview the Appx service should not be crashing. On the session host that got the black screen, does it show any crashing events in the event log at the time the user logged on?

    Outlook and office etc is to do with a broken aad.brokertoken issue for a specific user on a specific session host. Most likely caused by corruption caused by the previous Appx issues. Only solution I have for this it to ditch the affected session host and build a new one from image.

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