Learn how to add and remove group members and to promote and demote group owners in Microsoft 365.

This page provides phone numbers of Microsoft customer service.

This article describes step for users to allow all Web sites in the Internet zone to run JavaScript in Internet Explorer, Chrome, and Firefox.

Get answers to all of your Microsoft Word questions. Find Word help, how-to articles, training videos, tutorials, and more.

Change two-step verification settings; Common problems with two-step verification for work or school accounts; Manage app passwords for two-step verification

Access, download, or run the Surface app and the Surface Diagnostic Toolkit to help find and solve Surface problems.

Get help when Windows can't find the camera

了解在 Windows 中查找 BitLocker 恢复密钥的不同方法，并了解如何在系统上激活 BitLocker。

How to correct a #SPILL error in Excel (when a formula returns multiple results and cannot return them to the grid).

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