Learn how to sign in or out of your Outlook.com, Hotmail, Live, or MSN email account with Microsoft Support's step-by-step guide.

Learn how to install, reinstall, or activate Microsoft 365 or Office 2019 on a PC or Mac.

Select Start > All apps and search for the app in the list shown. Press and hold (or right-click) on the app, then select Uninstall. Uninstall in Settings. Select Start > Settings > Apps > Apps & features . Find the app you want to remove, select More > Uninstall. Note: Some apps can't be uninstalled from the Settings app right now.

在 Windows Hello 中，你可以使用面部识别、指纹或 PIN 登录，而不是使用密码。. 这些选项有助于更轻松地登录电脑，因为你的 PIN 仅与一台设备相关联，并且它已使用 Microsoft 帐户进行备份以供恢复。. 可以使用“设置”应用配置和管理 Windows Hello。. 在 Windows 设备 ...

Contact Microsoft Support. Find solutions to common problems, or get help from a support agent.

To adjust power and sleep settings in Windows 11, select Start > Settings > System > Power & battery > Screen and sleep. Screen: Select how long you want your device to wait before turning the screen off when you're not using your device.

Learn how to create installation media for installing or reinstalling Windows 7, Windows 8.1, or Windows 10.

Find out how to fix sound or audio problems in Windows.

Windows 10. To turn off your PC in Windows 10, select the Start button, select the Power button, and then select Shut down.

Si vous ne parvenez pas à vous connecter à votre compte de messagerie Outlook.com, Hotmail, Live ou MSN, ou si vous ne savez pas comment vous connecter ou vous déconnecter, voici quelques solutions.