Stop upgrade to Windows 11 - Microsoft Community
https://answers.microsoft.com/en-us/windows/forum/all/stop-upgrade-to-windows-11/4db4975b-98d5-4019-8de4-059518c996af
webJan 18, 2022 · As Windows Update has already started downloading the update, it may not be possible to cancel it, but I recommend you do the procedure below and restart your computer, if you have already reinstalled the Windows 11 update, you will need to go back to Windows 10.
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