Windows Anytime Upgrade Keys Page

He found it on a thread from 2009, posted by a user named Glass_Vista_88 . FJGCP-4DFJD-GJY49-VJBQ7-HYRR2

Here's a step-by-step explanation of the WAU key usage process: windows anytime upgrade keys

You cannot use a Windows 7 upgrade key on Windows 10 or Windows 11. The product ID formats are completely different. Even if you try to run the old slui activation wizard, it will reject the key as invalid. He found it on a thread from 2009,

Upgrades typically took as little as 10 to 15 minutes. windows anytime upgrade keys

Don’t throw them away if you’re nostalgic—but don’t expect them to unlock Windows 11 Pro.