Microsoft will stop old Windows product keys from activating new

Windows 7 and 8 keys still seem to work for now, but that may be ending.

How to Transfer your Windows 10 License to a New Computer

Microsoft quietly rewrites its activation rules for Windows 10

You Can Activate Windows 10 Creators Update with Old Windows License Keys

Windows 10 Help Forums

Microsoft will stop old Windows product keys from activating new Windows installs

You can no longer activate new Windows 11 builds with Windows 7 or 8 keys - Neowin

How to Transfer Windows 10/11 License to a new PC.

Find Your Windows 11 Product Key

Microsoft quietly rewrites its activation rules for Windows 10

Activating Windows Virtual Machine installed from Boot Camp