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

Learn how to connect a Bluetooth device in Windows and adjust Bluetooth pairing settings.

了解如何使用产品密钥或数字许可证激活 Windows、检查激活状态，以及链接Microsoft 帐户。 通过检查管理员上方是否显示电子邮件地址，确认管理员帐户也是你的 Microsoft 帐户。 如果显示了电子邮件地址，则这是 Microsoft 帐户。

We want to hear from you! Please continue to share your feedback with us — either in the Google Play Store, directly in the Phone Link and Link to Windows apps, or at the bottom of this article.

重新安装类型 可供选择的重新安装选项 你的应用会怎样 存储 在 \Users 下的个人数据会怎样 存储在其他文件夹或驱动器中的数据会怎样 所需的磁盘空间 重置Windows 11 保留我的文件 不是电脑附带的应用将会删除。

Protect your Android, iPhone, Mac, and Windows devices from threats by installing Microsoft Defender. Download Microsoft Defender on your devices either by:

Learn how to recover files that have been lost, deleted, or accidentally changed.

Learn how to switch out of S mode to install apps from outside of the Microsoft Store or to upgrade to Windows 11.

How to add a signature to your Word documents. You can also use the Signature Line command in Word to insert a line to show where to sign a document.

Windows 设备可能会在不同时间获得新功能，因为 Microsoft 通过多种服务技术提供非安全更新、修补程序、改进和增强功能，包括受控功能推出 (CFR)。 如果你需要重启设备来完成更新，Windows 会通知你，你可以选择最适合你完成更新的时间。