Learn how to locate and manage your app permissions on Windows devices. Some apps or games need specific permissions to work properly.

Learn how to troubleshoot Windows activation errors. Browse common activation errors and learn what you can do to fix them.

How to open the Camera app in Windows. To open up your webcam or camera, select the Start button, then select All apps, and then select Camera in the list of apps. If you have multiple cameras, you can switch between them by selecting Change Camera at the top right once the Camera app is opened.. Open Camera

Follow these steps to temporarily turn off Defender antivirus protection in Windows Security. Keep in mind that if you do, your device may be vulnerable to threats.

Learn how to change the refresh rate for your display in Windows to determine how smoothly motion appears on your screen.

Learn how to run Windows Update Troubleshooter to resolve errors downloading or installing Windows updates.

Learn how to download, install, and configure additional language packs for your version of Windows.

请执行以下任一操作： 在 “翻译为 ”下拉列表中，选择要将页面翻译成的语言。 默认值是为Microsoft Edge设置的语言。

System requirements and setup steps for the Phone Link app

Learn how to reinstall Windows on your PC and how activation works after it's installed.