Recently, the Teams Meeting Rooms (former Skype Meeting Rooms) updated the application to 220.127.116.11, see https://techcommunity.microsoft.com/t5/Microsoft-Teams-Blog/Microsoft-Teams-Rooms-July-Update/ba-p/758164.
We’ve seen customers replying that they are having issues with this update mentioning the Rooms cannot fetch the calendar information.
They are still able to register to Microsoft Teams or Skype for Business. You are still able to invite the rooms into Scheduled meetings, just the Cannot fetch calendar error….
The TMR updated the interface and user agent. So if you have ADFS configurated, validate that you allow the user agents to connect!
exists([Type == “http://schemas.microsoft.com/2012/01/requestcontext/claims/x-ms-proxy“])
&& NOT EXISTS([Type == “http://schemas.microsoft.com/2012/01/requestcontext/claims/x-ms-client-user-agent“, Value =~ “(?i)MicrosoftTeamsRoom\/4\.0\.105\.0”])
=> issue(Type = “http://schemas.microsoft.com/authorization/claims/deny“, Value = “true”);