Learn about the recovery options in Windows. Find out how to reset your PC, go back to a previous version of Windows, or use media to reinstall Windows.

本文介绍如何在 Windows 8.1、Windows 8、Windows 7 或 Windows Vista 中使用系统文件检查器工具来解决丢失或损坏的系统文件的问题。

Linking to other workbooks is a very common task in Excel, but sometimes you might find yourself with a workbook that has links you can’t find even though Excel tells you they exist.

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

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

Learn how to find and install digital downloads from Microsoft Store. See instructions to download and install software directly purchased from Microsoft.

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

See how to arrange all your open windows using the mouse, keyboard, or the Snap Assist feature in Windows.

Создание установочного носителя для установки или переустановки Windows 7, Windows 8.1 или Windows 10.

Use Find my device to locate and lock your lost or stolen Windows devices.