联系 Microsoft 支持人员。查找常见问题的解决方案，或从支持专员那里获取帮助。

Erfahren Sie, wie Sie Treiber in Windows aktualisieren, indem Sie den Geräte-Manager verwenden, um einen Treiber zu aktualisieren oder neu zu installieren.

Notes: If you know your password, but just want to change it, go to account.microsoft.com Security tab, and select Change my password. If you know your username and password but they have stopped working, read My username and password have stopped working.

In the upper left corner of the window, select the app launcher > SharePoint Tip: If you don't see the SharePoint app after selecting the app launcher, you can find it by either selecting More apps, or using the Search box near the top of the window to search for SharePoint.

Uninstall from the Start menu. Select Start > All apps and search for the app in the list shown.

Note: Offers vary by country.Be sure to redeem your rewards points in the same region you signed up in. Do not use a VPN while trying to redeem points. When redeeming points, use a mobile or landline phone number for authentication and not a VoIP phone number.

Select Add a new way to sign in or verify then choose how you would like to receive security codes.

了解如何修复 Windows 中的声音或音频问题。

An upgrade differs from an update in that it moves your PC from a previous version of Windows—such as Windows 10—to Windows 11. This FAQ is intended to answer questions about upgrading to Windows 11.

1. Sign in with your Microsoft account. You will be prompted to Sign in with Microsoft account. If you have an existing Microsoft account on your mobile device then you will be asked to confirm your account, then click Continue.. If you don't have an existing Microsoft account on your mobile device then you will be asked to sign into your account or create a new one, then click Continue.