Summary A BitLocker recovery key is needed when BitLocker can’t automatically unlock an encrypted drive in Windows. This is a 48‑digit number that lets you regain access to your drive.

Find solutions for Xbox account and profile issues, manage settings, and get support for your Xbox experience.

Learn how to find a Windows product key for activation, and when you'll use a digital license instead.

Need help setting up an Xbox profile or signing in to Xbox on your console, PC, or mobile device? This solution will help you sign in or create a new account.

Learn how to activate Windows using a product key or digital license, check your activation status, and link your Microsoft account.

Find out how to troubleshoot issues redeeming Xbox digital codes and gift cards.

Microsoft Authenticator helps you sign in to your accounts if you've forgotten your password, use two-step verification or multi-factor authentication, or have gone passwordless on your account.

Get help if you're having problems sending someone a digital Xbox game or subscription as a gift.

Microsoft is modernizing the activation experience for perpetual licenses. Beginning December 3, 2025, the traditional telephone-based product activation automation process has been moved from telephone to online. Customers will instead use the Product Activation Portal: Product Activation Portal The new digital workflow provides a more secure, reliable, and user‑friendly activation ...

如果您嘗試使用您的 Microsoft 帳戶餘額購買遊戲或附加內容，您的帳戶中可能沒有足夠的資金可支付商品的總額。 例如，如果嘗試購買標價為 9.99 美元的遊戲，而您的 Microsoft 帳戶餘額為 10.00 美元時，該金額會不足以支付稅金，因此您需要加入更多資金支付總餘額。