Well, are you using “new” Teams, or “classic” Teams, both of which can be installed and nag for updates that fail. My “new” Teams (just finally had to uninstall “classic” altogether) just randomly crashes/restarts throughout the day, and also randomly is “unable to authenticate”, making me offline but unaware of it, so miss messages. My “old” Outlook also ~15-20% of the time, on a fresh PC start, just can’t connect to server, and nothing will fix it except for rebooting PC. Yeah, so fucking done with MS shit, it’s all hot garbage, from 11 on down through all their apps. They’ve fucked up EMAIL ffs.