Similar issue in my Teams. (with Win11 24H2)
Teams works well in the beginning.
I can start an audio call or a meeting with others.
But after I finished the audio call or the meeting and I want to start another one. I get:
We've run into an issueOpps, something went wrong![UnknownError][Error:Cannot read properties of undefined (reading 'baseimageUrl')]Slot name:UNKNOWNSession ID:...Date and time stamp
In Teams, I get
We run into an issueTry again in a few minutes
Teams is not crashing, but it is no longer usable.
I cannot switch to other contacts. I stuck in the current scree. Chatting with the current contact still works.
And I see incoming calls, but I when I accept, the connections ends.
I already tried to delete all "Unkown Users" from my chats (because of the Slot name: UNKNOWN in the error message), but it didn't help.
Also reinstalling Teams did not solve the problem.