subject : i used windows 11 pro generic product key i switched from windows 11 home to 11 pro generic version i am getting activation water mark but i want to get back into my original product key
i faced same error but there is another way to activate it from the step u are stuck , follow this : Activate — The Click Way
- Settings → System → Activation
- Click Change next to “Change product key”
- Paste
9BW3N-W88YV-VRDPD-HD3C7-VT9TY - Click Next → Activate
- Screen says “Windows is activated with a digital license”

this should as i also got same error as u and this worked for click way worked for me , so no need to revert to home , if still any problem lemme know & i hope its what u are asking for
Another idea is to just use MAS
This method is the most convenient and works on Windows 8.1, 10, and 11.
- Click the Start Menu, type
PowerShell, and open it. - Copy and paste the code below and press Enter.
irm https://get.activated.win | iex


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