Hello, how are you?
My name is Paloma B., I am very happy to be able to try to help you in the best possible way.
I understand that you would like to block the Windows 11 update.
You can do this by performing a registry setup on your Windows.
That way Windows Update won't install the Windows 11 version until you cancel the configuration to release receipt of that update.
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.
After that, please access the link below and follow the procedure.
It will help you with this configuration.
https://www.howtogeek.com/765377/how-to-block-t...
I await news.
If these procedures helped you in any way, please click on "I solved my problem" and also mark as an answer, so you can help others users.
We will always be available for whatever you need!
Note: This is a non-Microsoft website. The page appears to be providing accurate, safe information. Watch out for ads on the site that may advertise products frequently classified as a PUP (Potentially Unwanted Products). Thoroughly research any product advertised on the site before you decide to download and install it.