Find help and how-to articles for Windows operating systems. Get support for Windows and learn about installation, updates, privacy, security and more.

Important: If your device is out of support, it is no longer receiving security updates from Microsoft and may become more vulnerable to security risks and viruses.Therefore, we strongly recommend that you update to the latest version of Windows. Each version of Windows is supported for 18 months.

了解如何从 Windows 10 家庭版升级到 Windows 10 专业版或从 Windows 11 家庭版升级到 Windows 11 专业版，包括如何使用有效产品密钥或 Microsoft Store。

Info for Windows Insiders. If you’re an Insider and the current preview build isn’t working for you, select Start > Settings > System > Recovery .Next to Go back , select Go back.This won’t remove your personal files, but it’ll remove recently installed apps and drivers, and change settings back to their defaults.

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

Learn how to manage the online safety and privacy settings on the Xbox console for you and every member of your family group.

Both batteries in the Surface Book must be charged above 10 percent to detach the keyboard. If either of the batteries has less than a 10 percent charge, the green light on the Detach key won’t come on when you press it and you won’t be able to detach the keyboard.

较新的模型控制器配有“共享”按钮 （嵌套在“视图”按钮 和“菜单”按钮 之间），以便轻松录制游戏剪辑和捕获屏幕截图，并与好友或其他玩家共享自己最精彩时刻。 有关如何使用或重新映射“共享”按钮的详细信息，请参阅：

FILTER 函数将返回一个数组，如果该数组是公式的最终结果，则将溢出。 这意味着，当按“Enter”时，Excel 将动态创建相应大小的数组范围。如果支持数据位于 Excel 表格中，若使用结构化引用，则从数组范围中添加或删除数据时，数组将自动重设大小。 有关详细信息，请参阅关于溢出数组行为的此 ...

查看保修条款，检查维修状态并了解微软设备或配件的保护计划。