Learn how to tell if your Office software is genuine. To help determine if your Microsoft software is genuine, go to our How to Tell site for more information. Here you'll learn about authentic packaging, including what to look for with product key labels, and Certificate of Authenticity (COA), how to report counterfeit software, and find out what your shopping and licensing options are.

Learn how to use eye control in Windows to type with an on-screen keyboard, communicate with people, and control the mouse with your eyes.

工作表函数按其功能分类。 单击某个类别可浏览其功能。 也可以通过按住 Ctrl+F 并键入前几个字母或描述性单词来查找函数。

Learn how to view, manage, and delete cookies in Microsoft Edge.

Learn how to unfreeze your OneDrive account if it has been inactive over 12 months.

If your Xbox One or Xbox Series X|S console is having network connection issues of any kind, we’ll point you to the best solution for the specific type of connection issue you’re experiencing.

了解当相机在 Windows 中不工作或看到错误 0xA00F4244 或 0x200F4244 时如何进行故障排除。

本文介绍如何获取最新版本的 DirectX 以启用系统上的游戏和多媒体应用程序。

Equation Editor (Microsoft Equation 3.0) was included in earlier versions of Word, but was removed from all versions in the January 2018 Public Update (PU) and replaced with a new equation editor.

Find Microsoft Excel help and learning resources. Explore how-to articles, guides, training videos, and tips to efficiently use Excel.