According to Statcounter, Windows 11 held a 55.18% market share in October 2025. That share dropped to 53.7% in November and dropped again in December. Now, Windows 11 holds a 50.73% market share.
https://gs.statcounter.com/os-version-market-share/windows/desktop/worldwide
Many are rollback to Windows 10, but Linux is increasing as well.
https://gs.statcounter.com/os-market-share/desktop/worldwide
I discovered that there’s a separate application which just reinstalls Teams all the time. I don’t remember the name, but it had Teams in the name. After I uninstalled that it finally stopped popping up.
https://learn.microsoft.com/en-gb/answers/questions/5605606/how-to-stop-ms-teams-launching-at-startup-and-rein
Apparently:
It’s called something like Teams System-Wide Installer, at least it used to be. Who knows, now. It is now a hidden app that won’t show under programs and features. I had to figure that shit out at work cause originally it only installed per user and my work wanted our users to start using it and make sure they didn’t need to go looking for it. Once it got bundled with the Office install I no longer had to care!