If you buy a Windows license key, especially Windows 10 or Windows 11, then you find your Windows is not active even though you have entered the license key you just bought, don’t panic first, maybe the history of your Windows key has not been lost.

What you have to do first is delete the history of your windows key, please follow these steps :

1. Click the Windows logo on the keyboard, then type cmd (right click > run as administrator)

2. Type: slmgr(space)/upk

3. Type: slmgr.vbs(space)/cpky

4. Type: slmgr(space)/ckms

5. Type: slmgr(space)/skms localhost

6. Next..Restart the PC first

7. Enter the Product Key provided in the email

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