Join Teams meetings anytime, anywhere, from any device. For the best experience, join from the Teams desktop or mobile apps. If you're having trouble joining a Teams meeting, try these tips: I can't join a Teams meeting.

Support for Office 2021 will end on October 13, 2026. Learn more about your options for Office.

Find solutions for Xbox account and profile issues, manage settings, and get support for your Xbox experience.

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。

Learn how to sign in to Office or Microsoft 365 from a desktop application or your web browser.

Learn how to activate Office that is pre-installed on new Windows 10 PCs or using a new product key.

Learn how to create installation media for installing or reinstalling Windows.

激活是一个技术过程，用于将产品密钥或数字权利与设备的硬件配置配对。 这不评估副本本身的真实性，也不保证 Windows 副本是 正版 的。 它只确保产品密钥或数字权利对硬件配置有效。 另一方面，验证是检查关键 Windows 许可文件是否未被损坏、删除或删除，以及是否必须接收某些更新和下载的 ...

桌面是登录 Windows 时看到的第一个屏幕，保持桌面井然有序有助于提高工作效率和整体可用性。 本文介绍如何通过自定义默认桌面图标、添加用于快速访问的快捷方式、调整图标大小以匹配你的首选项以及根据需要显示或隐藏桌面图标来个性化你的 Windows 桌面，以保持干净、高效的工作区。 自定义 ...

If you can't sign into your Microsoft account, use the sign-in helper to identify the problem. How to use the Microsoft account sign-in helper The tool will ask you to enter the email address or mobile phone number you're trying to sign in with and check the details you provide. If it detects a problem with your account, we'll tell you what you need to do to solve the problem. If the tool ...