You can redeem a Microsoft Gift Card on your PC, Xbox, or via the Microsoft website.

Method 1: Redeem via Microsoft Website (Recommended)

1. Go to redeem.microsoft.com. 
2. Log in with your Microsoft account.
3. Enter your 25-character gift card code.
4. Click "Next" to confirm.
5. The balance will be added to your Microsoft account and can be used for Xbox, Windows Store, and subscriptions.

Method 2: Redeem on Xbox (For Xbox Purchases & Subscriptions)

1. Turn on your Xbox One/Xbox Series X|S.
2. Press the Xbox button on your controller.
3. Navigate to "Store" → "Redeem Code".
4. Enter your 25-character gift card code and confirm.
5. The balance will be added to your Xbox account.

Method 3: Redeem via Microsoft Store (Windows PC)

1. Open the Microsoft Store on your Windows PC.
2. Click on your profile icon (top-right corner).
3. Select "Redeem Code".
4. Enter your gift card code and click Next.
5. Your balance will be added for apps, games, movies, and subscriptions.

Method 4: Redeem via Xbox App (Mobile)

1. Open the Xbox App on your phone.
2. Tap your profile icon → "Redeem Code".
3. Enter your Microsoft Gift Card code and confirm.
4. Your balance will be updated in your account.

Important Notes:

• Microsoft Gift Cards are region-locked, so ensure they match your Microsoft account’s country.
• The balance can be used for Xbox games, subscriptions (Game Pass, Xbox Live), and Microsoft Store purchases.