If your purchase of Office or Microsoft 365 came with a product key, you enter your product key on one of the websites listed below for your product. After you enter your key, you can download and install Office, or you can renew your Microsoft 365 subscription.

Learn how to back up apps, settings, files, photos, and Microsoft Edge favorites and preferences on your Windows PC.

升级不同于更新，因为它会将电脑从上一版本的 Windows（如 Windows 10）升级到 Windows 11。 本常见问题解答旨在解决有关升级到 Windows 11 的问题。 查找有关升级到 Windows 11 的热门问题的答案，从最低硬件要求到在何处找到升级。

Learn how to run Windows Update Troubleshooter to resolve errors downloading or installing Windows updates.

Open Control Panel in Windows. Windows 10. In the search box next to Start on the taskbar, type control panel. Select Control Panel from the list of results. Note: Many Control Panel features are simpler and faster in Settings . Open Settings.

Windows 是第一个提供集中式 AI 协助的电脑平台。 了解如何在 Windows 中使用 Copilot 实现并创建更多内容。 查找有关 Windows 操作系统的帮助和操作方法文章。 获取对 Windows 的支持，并了解安装、更新、隐私、安全等方面的信息。

新的 Outlook for Windows 提供最新功能、Microsoft Copilot 辅助功能，以及新的现代简化设计，可帮助你连接、组织和完成工作。. 我们汇总了一个功能覆盖率矩阵，以帮助你和你的团队了解与经典 Outlook 体验中目前存在的功能相比，有哪些可用和即将推出的内容。. 注意 ...

Use Microsoft Teams (work or school) for a Microsoft work or school account or a guest account in Windows 11. Also, find out which version of Teams you’re using.

Windows 11 in S mode is designed for security and performance, exclusively running apps from the Microsoft Store. If you want to install an app that isn't available in the Microsoft Store, you'll need to switch out of S mode.

Prova de här lösningarna om du inte kan logga in på ditt Outlook.com-, Hotmail-, Live- eller MSN-e-postkonto, eller om du inte vet hur du loggar in eller loggar ut.