Go to PC Settings > Update & Security > Activation and enter your 25-character product key.
If online activation fails, you can use the Microsoft Support Product Activation Portal or call their automated service by typing slui 4 in the Run box (Win + R). online & Microsoft Support Product Activation Portal Go to PC Settings > Update & Security
If Windows was pre-installed, the key is often on a sticker on your device . For digital copies, check your confirmation email. you should use the official channels:
If you have a legitimate license, you should use the official channels: Go to PC Settings > Update & Security