Learn why it's important to have a backup, and how Windows Backup can help you keep your files and settings safe.

Learn how to navigate Windows using keyboard shortcuts. Explore a full list of taskbar, command prompt, and general Windows shortcuts.

Learn about what effect closing a Microsoft account might have on your other apps and services.

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。

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

The Program Install and Uninstall troubleshooter helps you automatically repair issues when you're blocked from installing or removing programs.

In Windows 11, apps don't automatically get added to your desktop. Learn how to pin apps to your desktop or taskbar in Windows 11 or Windows 10.

Use OneDrive as a cloud backup to share your files and folders with others. Learn how to control permissions, allow editing, or set expiration dates.

You can choose which apps will start automatically when you start your device.

Email messages that you receive can be saved as a file on your computer, or a message that you are composing can be saved as a draft and finished later.