Turn your PC off completely. To shut down, select Start and then select Power > Shut down.. Sleep. Sleep uses very little power, your PC starts up faster, and you’re instantly back to where you left off.

Windows Media Player is available for Windows-based devices. Use this table to find the right version of the Player for your system. (If you've got a Mac, you can download Windows Media Components for QuickTime to play Windows Media files.)

如果应用已打开，请在任务栏上找到应用的图标按钮，长按此按钮，然后向上滑动，直到出现“应用列表”。 如果你使用的是鼠标，请在任务栏上找到应用图标按钮，右键单击此按钮，然后选择“固定到任务栏”。

Microsoft's products and services work best if you use the same language and region across all your devices, and in all of your app and Store settings.

Learn how to locate, install, and share files with custom fonts compatible with Microsoft Office applications.

Under Ways to sign in , you have three choices to sign in with Windows Hello:. Select Facial recognition (Windows Hello) to set up facial recognition sign-in with your PC's infrared camera or an external infrared camera

重要: 分节符不同于分页符。如果想要更改页眉或页脚的页面之前已有分页符， 请删除分页符 并将其替换为分节符，如下所示。

If you weren't able to change your password. If you couldn't change your password this way, see Reset your Microsoft account password. Need more help? Contact Support. For technical support, go to Contact Microsoft Support, enter your problem and select Get Help.If you still need help, select Contact Support to be routed to the best support option.

Download Microsoft Edge from the Apple App Store and sign in with your Microsoft account.

Note: Some cameras won't appear in the Camera settings page.These include infrared (IR) cameras used for Windows Hello Face authentication, cameras using DirectShow technology (like many apps provided by DSLR or action camera manufacturers so their devices can be used as webcams), and proprietary cameras that aren't managed by Windows—such as industrial cameras and many networked cameras.