Note: If you receive a prompt asking whether to allow the app to access your camera (iOS) or to allow the app to take pictures and record video (Android). select Allow so the authenticator app can access your camera to take a picture of the QR code in the next step.If you don't allow the camera, you can still set up the authenticator app as described in Manually add an account to the app.

Learn how to access Windows device security settings in Windows Security to help protect your device from malicious software.

Find out how to use Game Bar to capture game play, chat with friends, track achievements, and more.

Warning: Excel provides the DATEDIF function in order to support older workbooks from Lotus 1-2-3.The DATEDIF function may calculate incorrect results under certain scenarios. Please see the known issues section of this article for further details.

获取有关 Windows 安全的帮助; 在 Microsoft Edge 中查看和删除浏览器历史记录; 删除和管理 Cookie; 重新安装 Windows 时安全移除有价值的内容

Get help for the account you use with Microsoft and learn how to set up, protect and manage your services and subscriptions.

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

Find solutions for common issues with Game Bar on Windows, including keyboard shortcut problems.

Use family safety settings to block inappropriate websites and searches on Windows, Xbox and mobile devices.

Touch gestures. You can use these gestures on the touch screen of your Windows 11 device. To turn touch gestures on, select Start > Settings > Bluetooth & devices > Touch > Three- and four-finger touch gestures, and make sure it's turned on.