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UPDATE: I was forced to clear my OS and start over. Recovering from Time Machine brought over too many support files even when being picky. I have re-installed Teams from an old installer in a previous Time Machine entry and I am able to log in. This may not last though. This was obviously extreme and I hope you all do not have to do the same.
Teams for Mac recently updated and totally broke the functionality of Teams. I do not have connectivity to my work account at all. I had deleted all Teams file on 8/8 and reinstalled the Teams Classic which worked well. I came back to my computer later that afternoon and the new Teams had reinstalled itself. I went out of office until today and I have a repear error of "We couldn't authenticate you. This could be due to a device or network problem, or Teams could be experiencing a technical issue."
This is a Teams technical issue due to the repetitive error and my ability to sign in via iOS and web with the same credtentials on the same network, and in once case, the same machine.
Teams version 24193.1708.3043.1759
Client version 50/24071128823
Using Microsoft Teams on macOS, including installation, features, and compatibility
Locked Question. This question was migrated from the Microsoft Support Community. You can vote on whether it's helpful, but you can't add comments or replies or follow the question.
Ugh....so about an hour after I posted this I got the authentication error again (Teams and OneDrive). So whatever the problem is, it's not solved yet.
I've also had this issue for nearly two months, my internal IT team has sent different Mac machines to me etc, thought it could be related to internal accounts. We have done all of the above troubleshooting as well - clear cache, reinstall teams, and reinstall whole office suite as precaution. I sometimes have to sign into and out of teams multiple times per day to try and resolve this issue and it keeps coming back! I'm just happy to see that others are experiencing this and I'm not losing my mind! This is the first thread I've found related to the problem so hoping we see a resolution from Microsoft ASAP it's very frustrating when teams decides to no longer work multiple times a day when I rely on it for client calls!
My system is still working properly for two days without fail after logging out of Teams and back in - I did reinstall Teams, but never cleared cache. I never uninstalled OneDrive, both have worked fine, I think OneDrive crashed once, but it opened back up normal.
If you haven't logged out of Teams, I'd recommend trying that.
Same here as all of the above.
Even went through and cleaned several MS Teams cache locations, plus the reinstall.
Works for a few hours then problem returns.
Today (8/19) I tried signing completely out of Teams and back in. I tried this in the past and it didn't work, however so far today it's been working fine all day. It also solved the OneDrive authentication issue. Not sure whether this will last, but it's been going fine for 8 hours now. Maybe Microsoft tweaked something on their side.