Sign out of Teams. While it's a good idea to remain signed in to continue receiving chats, notifications, incoming calls, and other activities, sometimes you might want to sign out of Teams to use another account or for other reasons.

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。

Learn how to receive a refund or exchange for items purchased from Microsoft.

This operation has been canceled due to restrictions in effect on this computer. Please contact your system administrator.

Microsoft Rewards has two status tiers: Level 1 and Level 2. Earn and keep Level 2 status by reaching 500 Microsoft Rewards points each month - no matter how you earn points, they all count toward your status.

You can see multiple calendars at the same time side-by-side or combined into a stacked overlay view to help you see availability across calendars.

使用电脑健康状况检查应用可以获取有关 Windows 设备运行状况的最新信息，从而帮助你采取措施提高设备性能和排查性能问题。

通过 Microsoft 更新为 Windows 启用自动更新时，你还将获得早期 Office 版本的 Office 更新，例如 Office 批量许可证安装。

Explore subscription benefits, browse training courses, learn how to secure your device, and more.

检查你的版本. DirectX 是许多 Windows 游戏都需要的一种多媒体技术套件。 如果你的电脑未安装正确版本的 DirectX（产品包装盒上应标有所需的版本），游戏可能无法正常运行。