Can you really activate Windows 11 or /10 with Windows 7 or 8, 8.1 Key?
Yes, an unofficial Microsoft offer, there is still the possibility to activate Windows 11 or Windows 10 with a Windows 7, 8 or 8.1 key, key, serial number, ...!
This also works under Windows 11 and 10. Even if you do not provide a key during the installation process, you can enter a Windows 7 or 8.1 key instead of a Windows 10 key under Settings> Update & Security> Activation. Your PC receives digital authorization.
The old MS Windows product keys can only be activated for a corresponding Windows 10 product version. For example, a product key for Windows 7 Starter, Home Basic and Home Premium can be used to activate Windows 10 Home. Windows 7 Professional and Ultimate product keys can activate Windows 10 Pro.