Discover the latest features in Office 2021, including new ways to create content, manage data, and communicate effectively.

Microsoft Support offers assistance for Microsoft products, including how-to articles, videos, and training for various software and devices.

Go to Settings > Apps > Apps & features to change whether you're shown app recommendations when trying to install apps from outside the Store.

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

Learn how Smart charging in Windows can help your battery last longer over time.

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。

In Windows, having a camera and microphone as part of your device lets you make Teams video calls, take pictures, record videos, and more. Many apps and services request and use the camera or microphone, and Windows settings give you control over which apps can use your camera or microphone.

Learn how to use antivirus protection in Windows Security to protect your Windows PC against malware, viruses, and other threats.

If you already have an account signed in to OneDrive and you want to add or remove another account, you’ll do that in OneDrive Settings.

Explore OneDrive support, help, and learning resources. Learn how to protect your important files, documents, and memories with OneDrive.