了解如何使用产品密钥或数字许可证激活 Windows、检查激活状态，以及链接Microsoft 帐户。

If either of the categories above apply to you, use the following procedures to update your browser: Update once. In the browser, go to Settings and more > Help and feedback > About Microsoft Edge (edge://settings/help).. If the About page shows Microsoft Edge is up to date., you don't need to do anything.

Learn how Smart charging in Windows can help your battery last longer over time.

Learn how to turn on device encryption, or standard BitLocker encryption in Windows.

Découvrez comment installer, réinstaller ou activer Microsoft 365 ou Office 2019 sur un PC ou Mac.

Update Microsoft Store. Select Start, then from the apps list, select Microsoft Store.In Microsoft Store, select Library > Get updates.If an update for Microsoft Store is available, it will start installing automatically.

Discover the latest features in Office 2021, including new ways to create content, manage data, and communicate effectively.

Deinstallieren oder entfernen Sie Apps und Programme in der Einstellungs-App.

Use the Windows Quick Assist app to get help with a computer problem from family or friends or help them out. Quick Assist uses a remote connection, so remember to only use it with people you trust, since they can see your computer screen or control your PC (if you allow it).

Learn how to download a recovery image for your Surface device and restore it to factory settings.