Review the warranty terms, check your warranty status, and learn about the protection plans for your Microsoft device or accessory.

There are a few common scenarios in which Windows running on a PC might be discovered to be non-genuine during validation. Repairs. If your PC has been repaired, you might start to see messages on your desktop that Windows isn't genuine.

Get manuals for Xbox consoles and all Xbox accessories in your language.

可通过两种方法在 Android 手机或平板电脑上获取 Office： 可以安装将 Word、Excel 和 PowerPoint 组合到单个应用中的新 Office 移动应用，并引入以移动为中心的新功能来查看、编辑和共享文件，而无需在多个应用之间切换。

Learn about Xbox consoles, system requirements, and networking, and get troubleshooting help.

Notes: Macro Repeat does not support switching applications.For example, if you open your Web browser while a macro is repeating in a game, the macro stops repeating. Likewise, if you include a command in a macro to switch to a different application, Macro Repeat does not take effect, and the macro runs once only.

了解如何使用 Android、iOS 或 Windows 设备在 Xbox 上玩云游戏。

Screen time reporting shows daily and weekly details about when and for how long your family member used their devices. Gain insight into the amount of time your family member spends on a particular social media app, game or web browser and decide whether you would like to enable screen time limits for any connected devices. To view screen time for a family member, tap Today, then Screen time ...

Learn how to use Microsoft Planner in Teams. Find Planner help and learning content to plan an event, publish content, track a process, and more.

联系 Microsoft 支持人员。查找常见问题的解决方案，或从支持专员那里获取帮助。