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

了解如何使用产品密钥或数字许可证激活 Windows、检查激活状态，以及链接Microsoft 帐户。

If you need help with Outlook.com, you can read our self-help content, or get support via email.

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

Add voting buttons to a message so that recipients can vote; results are tracked automatically in Outlook.

Learn how to troubleshoot problems updating Windows. Find answers to common questions and issues installing Windows updates.

借助提示和资源自行进行疑难解答以解决 Windows 蓝屏错误；如果你需要更多帮助，请联系 Microsoft 支持。

Contact Microsoft Support. What's new. Surface Pro; Surface Laptop; Surface Laptop Studio 2

Deinstallieren oder entfernen Sie Apps und Programme in der Einstellungs-App.

Learn how to manage extensions in Microsoft Edge, including adding, disabling, or removing them as needed.