iOS Android To install Authenticator on your iOS device Scan the QR code or download and install Authenticator from the Apple app store.

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.

XBOX Support ... XBOX Support

如果在电脑上安装或更新游戏服务时遇到问题，或者你注意到电脑版 XBOX 应用启动时缺少内容，则可能需要下载并运行适用于电脑的游戏服务修复工具。

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

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。

此适用于 Windows 11 版本 25H2 和 Windows 11 版本 24H2 (KB5121767) 的带外 (OOB) 更新是累积更新。 它包括先前安全和非安全更新的所有改进，以及其他修补程序。 改进 此 OOB 更新包括以下改进： [系统性能] 此更新解决了影响有限数量的设备 (Intel IPF) 驱动程序的问题，该问题可能会导致安装最新 Windows 更新后 ...

Learn how to use your Windows device as a mobile hotspot.

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

Create surveys, quizzes, and polls, and easily see results as they come in. Invite others to respond to your form using any web browser or mobile device. Use built-in analytics to evaluate responses as they're submitted. Export form data, such as quiz results, to Excel for additional analysis or grading.