Accessing and using Microsoft Teams on smartphones and tablets across platforms
I had the same errors when signing in, but once in a while I could get in on wifi. After I installed that new beta everything worked fine for about an hour and then the problems resumed, just like with prior 'solutions'.
This morning I got a new Teams update (non-beta version 1416/1.0.0.2021042002) and it's been working perfectly on wifi for almost 2 hours now, which is longer than with any Authenticator update I've tested since this issue began.