How to redeem the key via the Microsoft page?

1.  Log in to your Xbox account on this page here.
2. After you successfully logged in you will need to go to this redemption page.
3. Enter the 25-character code, select Next, and then follow the prompts.

In case the Xbox key cannot be activated on the Microsoft page, it needs to be redeemed on an Xbox console or Xbox application on Windows.

How to redeem the key via Xbox Series X|S and Xbox One?

1. Press the Xbox button to open the guide, and then select Store.
2. Press the View button to open the side menu, and then select Redeem.
3. Enter the 25-character code, select Next, and then follow the prompts.