Windows 10: Activate Windows 8.1 with Windows 11 Product Key

I wanted to activate my Windows 8.1 with a Windows 11 product key. Is this possible? I tried several times to enter the key but it doesn't work. The error message says:"This key didn´t work, please check it an try again, or try a different key"Thanks

:)

 

Windows 8 Clubhouse

Here's some interesting reading:

Microsoft mistakenly gifts Windows 8 pirates with a free activation key

Windows 8 app count is closing in on 20,000

Done *Toast :toast:

 

Windows 8 key troubles

or just use generic cdkey to install and then that key to activate later

hxxp://superuser.com/questions/697253/clean-install-windows-8-1-or-windows-8-from-oem-key

bellow in comments

 

Windows 8 key troubles

the iso i got on my google drive doesn't need a serial to install, it just installs and then u activate it, when windows is started.