For Xbox Series 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.
For Windows PC:
1.Follow the link here https://support.microsoft.com/en-us/acc ... 834ad22fa8
2.Select "Redeem Code".
3.Enter the 25-character code, select "Next", and then follow the prompts.
