Using Authenticator as a way to sign in. If you have turned on passwordless, two-step, or multi-factor authentication for your account, use the following steps to sign-in:

Learn how to download, install, and use the PC Health Check app to check your device's compatibility with Windows 11 and get tips to improve its performance.

在任务栏上的搜索框中键入“regedit”，然后从结果列表中选择“注册表编辑器”（桌面应用）。 警告: 使用注册表编辑器时，请谨慎操作。如果注册表编辑不正确，可能会发生严重问题，这些问题可能需要完全重新安装操作系统，导致数据丢失。

Windows 8.1 Windows 8.1 Enterprise Windows 8.1 Pro Windows 8 Windows 8 Enterprise Windows 8 Pro Windows RT Windows 7 Enterprise Windows 7 Home Basic Windows 7 Home Premium Windows 7 Professional Windows 7 Starter Windows 7 Ultimate Windows Server 2008 R2 Datacenter Windows Server 2008 R2 Enterprise Windows Server 2008 R2 for Itanium-Based Systems Windows Server 2008 R2 Standard Windows Vista ...

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

Erfahren Sie, wie Sie ein Installationsmedium für die Installation oder Neuinstallation von Windows 7, Windows 8.1 oder Windows 10 erstellen.

Select the temporary files, unused files, files synced to the cloud, or unused apps you want to remove, then select the Clean up button for each section.

选择任务栏右侧的操作中心，然后移动"亮度"滑块 以调整亮度。 (如果滑块不存在，请参阅下面的备注部分。) 某些电脑可能允许 Windows 根据当前照明条件自动调整屏幕亮度。 若要了解你的电脑是否支持此功能，请选择"设置>"> 显示"。 在“亮度和颜色”下，查找“在照明条件更改时自动更改亮度 ...

To get support in Outlook.com, click here or select Help on the menu bar and enter your query. If the self-help doesn't solve your problem, scroll down to Still need help? and select Yes.. To contact us in Outlook.com, you'll need to sign in.

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