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: There are no event logs generated at all, starting 30-60 min prior to the 'crash'. Event Viewer is getting spammed by the following warning: 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?

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.

AVD Session hosts becoming unavailable at random

Harm Oosthoek 30

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:

There are no event logs generated at all, starting 30-60 min prior to the 'crash'.
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?

Harm Oosthoek 30 Reputation points

2023-07-21T07:57:05.03+00:00

Thanks for your answer!

What are you using to access - Web Client/Store Client/RD Client etc? Are you seeing the same behavior across all methods?

We are using the AVD-client (Remote Desktop app for Mac and Azure Remote Desktop for Windows)

What type of Host Pool - Pooled or Personal? If pooled, is this only happening on certain hosts or all?

Pooled - We have this issue on multiple hosts

If Pooled, do you have any scaling rules applied? Curios to see if this outage happens during a scaling event?

I'm also curious about this one. Do you know how to check this?

Are you using FSLogix to redirect user profiles?

Yes

Have you follows the other steps as described in the TechCommunity Link (disabling USB Redirection etc)

Yes, I disabled USB Redirection yesterday. Hope that this fixes the issue! The versions for the agents are newer so I don't think that that causes the issue.

Do you have Azure Monitor Log Analytics enabled for your Azure Virtual Desktop Host Pools and Session Hosts? This will give you in-depth technical logging and is the best way to diagnose the issues.

Yes we have! I'll check these!
Michael Durkan 12,216 Reputation points MVP

2023-07-22T08:25:44.7833333+00:00

Hi Harm

checking in to see if you got any further with this and require any further assistance?

Thanks

Michael
Harm Oosthoek 30 Reputation points

2023-07-25T07:05:47.5733333+00:00

Hi Michael,

Unfortunately the issue is still there after disabling the USB-redirection. I did't see shocking information in the Insights reports.

How can I check if the outage happens during a scaling event?
vipullag-MSFT 26,426 Reputation points

2023-07-25T12:42:58.1966667+00:00

Hello Harm Oosthoek

Firstly, apologies for the delay in responding here and any inconvenience this issue may have caused.

This issue needs deeper investigation. Support team will be able to check and help on this. I would recommend you to open a azure support case.

If you don't have a support plan enabled on your subscription, I request you to send an email to AzCommunity@Microsoft.com with Subject as "Attn:Vikas" referencing this thread along with your subscription ID. I can then enable your subscription with a one-time free technical support.

Once the issue is resolved, request you to post the resolution here for the benefit of community.
Harm Oosthoek 30 Reputation points

2023-07-25T12:53:52.3633333+00:00

DI already submitted a ticket and I'm waiting for a response. I'll post the resolution here.
vipullag-MSFT 26,426 Reputation points

2023-07-25T13:24:31.11+00:00

Hello Harm Oosthoek

Thanks for responding and confirming on this.
Oskar Svedman 21 Reputation points

2024-01-29T19:50:36.41+00:00

Hi, did you find any solution for this? I have the same issue and it is very frustrated.

6 answers

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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AVD Session hosts becoming unavailable at random

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