AVD Disconnection

Yes, many users have reported frequent Azure Virtual Desktop (AVD) disconnections and Microsoft Teams restarts during calls, which may be related to geo-blocking or network issues. i recommend review the below:

Geo-blocking & Network Restrictions
Enable ShortPath to improve AVD connection stability and reduce latency.
Use the optimized Teams for AVD version, clear the cache, and keep the app updated.
Adjust registry settings, such as KeepAliveTimeout, to prevent frequent disconnections.

Here i share link about this: https://learn.microsoft.com/en-us/azure/virtual-desktop/rdp-shortpath?tabs=managed-networks

https://learn.microsoft.com/en-us/azure/virtual-desktop/teams-on-avd

I hope can help you.