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

了解如何更改 Windows 中显示器的刷新率，以确定在屏幕上显示运动的平滑程度。

Get help and support for Microsoft Edge. Find Microsoft Edge support content, how-to articles, tutorials, and more.

Learn how to use a health report in Windows Security to manage your device performance and keep your device secure.

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.

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Learn how to recognize Internet connection problems and help improve your computer's online performance.

We’re making some changes to Windows and Microsoft 365 that will impact Cortana users. Cortana voice assistance in Windows as a standalone app was retired in the spring of 2023.

Découvrez comment installer, réinstaller ou activer Microsoft 365 ou Office 2019 sur un PC ou Mac.

Word 2021 for Windows gives you new ways to create compelling content. This article provides an overview of the new features you can discover.