Unless you have a vintage PC running Windows 7 or 8 that you cannot reinstall and you already possess a genuine, unused retail Anytime Upgrade key — purchasing one today from third-party websites is risky. Most keys are either invalid, used, or will fail activation.
If you have a legitimate unused Anytime Upgrade key, it might still work, but Microsoft’s activation servers for those products are increasingly unreliable. windows anytime upgrade key
: If you purchased the upgrade digitally, the key was sent to the email address used during the transaction. Unless you have a vintage PC running Windows
Microsoft has officially discontinued the dedicated "Windows Anytime Upgrade" marketing and tool. However, the functionality remains built into the Windows architecture. it might still work