Learn how to receive a refund or exchange for items purchased from Microsoft.

Get troubleshooting tips if you run into problems downloading, installing, or updating Microsoft Edge.

Find out the steps you can take if you receive a message telling you a driver can't load on your device.

After launching an Office app, you might receive a message that says Get genuine Office.. If you see this, we've determined that the Office product installed on your device isn't legitimate and you may be a victim of software counterfeiting.

KB5034441: Windows Recovery Environment update for Windows 10, version 21H2 and 22H2: January 9, 2024

Training: Watch and learn how to use PowerPoint in Windows. Explore PowerPoint training guides, articles, and how-to videos.

Learn how to manage background activity for apps to help save battery power in Windows.

扩展或加载项是自定义浏览器体验并为你提供更多控制权的简单工具。 下面介绍如何在 Microsoft Edge 中添加、关闭和删除扩展或加载项 。

Learn how to use the Activation troubleshooter to resolve common activation issues in Windows.

Make the everyday easier with Windows 11. When there's a lot to do, Windows 11 helps you get it done. With intuitive navigation and new multitasking tools, it brings you the performance you want and the security you need.