Support for Windows 10 has ended on October 14, 2025. Learn more about your options for Windows 10.

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

Check the XBOX services, games, and apps for any service outages.

需要有关 XBOX 主机、XBOX 游戏或 XBOX 网络的帮助?了解如何与我们联系。

The Microsoft Authenticator app helps you sign into your accounts when you're using two-step verification.

June 9, 2026—KB5094128 (OS Build 20348.5256) To ensure the boot.stl file is included as part of the installation media, do one of the following: Use the Update WinPE script to update an existing Windows image. (Recommended) Manually copy the boot.stl file from the device Windows\Boot\EFI folder to the corresponding folder on your installation media before deploying the update. For ...

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.

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

摘要 当 BitLocker 无法在 Windows 中自动解锁加密驱动器时，需要 BitLocker 恢复密钥。 这是一个 48 位数字，可让你重新获得对驱动器的访问权限。

注意 Microsoft Authenticator 不 适用于电脑或 Mac，因为出于安全原因，验证器应用是专为智能手机设计的。 了解详细信息。 Microsoft 不再支持超过一年的 Authenticator 版本。 始终使设备保持最新。 中国用户应阅读 如何在中国下载和使用 Microsoft Authenticator。