AVD Session hosts becoming unavailable at random

Harm Oosthoek 30 Reputation points
2023-07-21T07:33:26.8066667+00:00

We have the same issue as described in the following article:

https://techcommunity.microsoft.com/t5/azure-virtual-desktop/anyone-experiencing-session-hosts-becoming-unavailable-at-random/m-p/3880609/emcs_t/S2h8ZW1haWx8dG9waWNfc3Vic2NyaXB0aW9ufExLQzlCN0NYSUNWUVVVfDM4ODA2MDl8U1VCU0NSSVBUSU9OU3xoSw#M11243

  • Users get kicked out of their session and cannot reconnect.
    • The user sessions are still marked as Active/Disconnected according to the Azure portal.
  • We cannot RDP to the session host through the internal network.

After we shutdown and reboot the session host, everything will work fine again.

 

We noticed the following notable things:

  1. There are no event logs generated at all, starting 30-60 min prior to the 'crash'.
  2. Event Viewer is getting spammed by the following warning:
    1. Microsoft.RDInfra.RDAgent.Service.AgentUpdateStateImpl
        1. Unexpected last recorded state
      

I have yet to find anything on this problem. Is anyone else experiencing this with their AVD environments?

Azure Virtual Desktop
Azure Virtual Desktop
A Microsoft desktop and app virtualization service that runs on Azure. Previously known as Windows Virtual Desktop.
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  1. Oliver Lowth 0 Reputation points
    2023-09-22T14:27:14.7066667+00:00

    Are you still having the same issue? We've seen similar issues - UNC, Ping, remote MMC works fine. Can't RDP on the internal network and all users lose access until the host is rebooted. Event logs stop getting generated too.

    We've got a ticket open with Microsoft Support but getting nowhere.

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