Are you using a free Teams account? Or is it a company managed account?
Because I've experienced similar simptoms some time ago with an older versione of the app. The IT teams did something via the Teams admin console which fixed it (though i dunno what it was...).
Pinned Comments
ogarcia commented on 2023-02-24 07:46 (UTC)
@mluque Yes, it seems that Microsoft is doing the wrong thing and has deleted the packages from the repository. There are several open threads on this topic.
The truth is that since the announcement that Microsoft was going to withdraw the Teams client, one does not know what is going to happen. I hope they restore the files, but in the meantime I have uploaded the binaries here (they are the Arch packages, I don't have the original .deb packages but if someone passes them to me I can include them).
ogarcia commented on 2022-02-01 10:30 (UTC) (edited on 2022-04-19 12:53 (UTC) by ogarcia)
Please, before flag as Out-of-date perform a double check in versions. Version 1.4.00.4855 is higher than 1.3.00.30857, 1.3.00.5153 or 1.3.00.958.
If you doubt, please remember the math classes and perform a count 1, 2, 3, 4, ..., 958, 959, ..., 5152, 5153, 5154, ..., 30856, 30857, 30858, etc.
You can go to HERE, download DEB or RPM and compare versions