Teams & Outlook connectivity issues

Ran into an interesting one, wanted to see if anyone else has come across this:
3 Host AVD environment running Nv16as_v4 hosts, about 15 users per host:
At some point in the morning, as more users are added to the environment, users are not able to connect to teams or outlook. The apps open, but fail to connect to Microsoft servers. If a user signs out and in multiple times, they might eventually connect. At the end of the day as users logout, this issue can no longer be replicated, and Teams and Outlook connect as they should. This also affects Onedrive in the same way. 
 
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Dave Stephenson

I know we've seen this with a few partners, but as far as I know, none have had the issue with Session Hosts that are running W11 23H2 (or newer).

Some partners said they had success with this KB (Can't sign in to Microsoft 365 Windows desktop applications - Microsoft 365 | Microsoft Learn) and this Hotfix (October 22, 2024—KB5045594 (OS Build 19045.5073) Preview - Microsoft Support), but it also depends on the version of Windows you're currently using.

Do either of those help or are you seeing something different?

 

 

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Jeremy Wallace

Thanks for the info Dave! We are running W11 21H2 so we're going to try implementing a 23H2 image and see if that makes the difference. I'll let you know how it goes!

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Jeremy Wallace

Moving up from 21H2 to 23H2 seemed to resolve the issue. Thank you for the help, it is very much appreciated!

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Dave Stephenson

Excellent news!

Hopefully this can help out other partners as well. 🙂

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