Open and run DxDiag.exe - Microsoft Support
Open and run DxDiag.exe. This tool is used to collect info about devices to help troubleshoot problems with DirectX sound and video. A support person might ask for this info, or you might post it in a forum when you ask for help.
Excel help & learning
Find Microsoft Excel help and learning resources. Explore how-to articles, guides, training videos, and tips to efficiently use Excel.
How to reset the Hosts file back to the default - Microsoft Support
Microsoft ended support for Windows Server 2003 on July 14, 2015. This change has affected your software updates and security options. Learn what this means for you and how to stay protected. Describes how to reset the Hosts file back to the default.
从 PC 卸载 Office - Microsoft 支持
以下步骤介绍如何卸载 PC (笔记本电脑、台式电脑或二合一一体机) 上的 Microsoft 365 产品。. 对于 Mac，请参阅 卸载 Office for Mac 。. 提示: 卸载 Microsoft 365 仅 会从计算机中删除 Microsoft 365 应用程序，而不会删除使用 Office 应用创建的任何文件、文档或工作簿。.
Applies To:
Office 2021, Office 2019, Office 2016, Microsoft 365 for home, Office for business, Office 365 Small Business, Microsoft 365 admin, Office 365 operated by 21Vianet, Office 365 operated by 21Vianet - Small Business Admin, Office 365 operated by 21Vianet - Admin, Office 365 Germany - Enterprise, Office 365 Germany - Enterprise admin, Office.com