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.

Check Xbox services, games, and apps for service outages or functionality issues.

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Microsoft 支持可帮助你处理 Microsoft 产品的问题。 查找有关 Microsoft Copilot、Microsoft 365、Windows 11、Surface 等的操作方法文章、视频和培训。

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Windows Secure Boot certificate expiration Important: Secure Boot certificates used by most Windows devices are set to expire starting in June 2026. This might affect the ability of certain personal and business devices to boot securely if not updated in time. To avoid disruption, we recommend reviewing the guidance and taking action to update certificates in advance. For details and ...

If you have a Surface or Xbox, you can use your Microsoft account to check its warranty and make warranty claims. Your new Surface or Surface-branded accessory comes with a limited standard warranty. For more warranty details, see Warranty and Protection Plan Terms & Conditions. How to register your Microsoft device for warranty and service Before you can check your warranty or get service ...