Windows 10 product key not working on Windows 11

If your Windows 10 product key is not working on Windows 11, check the Windows Edition, your activation status, and then ...
Windows Central

Microsoft kills loophole that let Windows 7 keys activate Windows 11 and 10

Microsoft is closing the loophole that allowed older Windows product keys to activate Windows 10 and Windows 11. This loophole has existed since Windows 10 first launched as a "free" upgrade for ...
The Verge

Microsoft has closed the free Windows 11 loophole — Windows 7 keys no longer work

The Windows activation loophole has now been closed by Microsoft, so you’ll have to buy a legit Windows 11 key. The Windows activation loophole has now been closed by Microsoft, so you’ll have to buy ...