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

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[–] 11 points 6 months ago

https://learn.microsoft.com/en-gb/answers/questions/5605606/how-to-stop-ms-teams-launching-at-startup-and-rein

Apparently:

This behavior is usually caused by two things:

  • A background installer from Microsoft Office called the Teams Machine-Wide Installer, which automatically reinstalls Teams for each user.
  • Windows 11’s built-in Chat feature, which is powered by Teams and may reinstall the app during updates or restarts.
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