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.

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

Microsoft is committed to advancing security standards and as such, we will start phasing out SMS as a method of authentication and account recovery for personal Microsoft accounts. Why is SMS no longer a method of authentication and account recovery for a personal Microsoft account? Microsoft believes that the future of authentication is passwordless, secure, and user-friendly. SMS-based ...

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

摘要 本文解释了为什么Microsoft中的验证码并不总是到达。 它包括最常见原因的列表以及每个原因的解决方案。 Microsoft致力于提高安全标准，因此，我们将开始逐步淘汰短信，作为个人Microsoft帐户的身份验证和帐户恢复方法。 验证码并不总是到达的原因 通读下面最常见的原因列表，看看其中是否有 ...

Find out how to submit a request for a refund for a purchase of digital Xbox content.

使用安全密钥登录到帐户 如果厌倦了必须记住或重置密码，请尝试改用符合 FIDO2 标准的安全密钥登录到Microsoft帐户。 什么是安全密钥？ 安全密钥是一种物理设备，可用于替代用户名和密码进行登录。 由于它需要使用指纹或 PIN 解锁，即使某人拥有你的安全密钥，他们也无法在没有你的指纹或 PIN 的 ...

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Learn how to use the Gaming Services Repair Tool to troubleshoot installation and update issues with Gaming Services on PC.