OneDrive help & learning
Explore OneDrive support, help, and learning resources. Learn how to protect your important files, documents, and memories with OneDrive.
解决 Windows 中的蓝屏错误 - Microsoft 支持
借助提示和资源自行进行疑难解答以解决 Windows 蓝屏错误；如果你需要更多帮助，请联系 Microsoft 支持。
Fix common Surface problems using the Surface app and Surface ...
Access, download, or run the Surface app and the Surface Diagnostic Toolkit to help find and solve Surface problems.
Criar mídia de instalação para o Windows - Suporte da Microsoft
Saiba como criar mídia de instalação para instalar ou reinstalar o Windows 7, o Windows 8.1 ou o Windows 10.
SUMIFS function - Microsoft Support
How to use the SUMIFS function in Excel, one of Excel’s math and trig functions, to add arguments that meet multiple criteria.
Applies To:
Excel for Microsoft 365, Excel for Microsoft 365 for Mac, Excel for the web, Excel 2021, Excel 2021 for Mac, Excel 2019, Excel 2019 for Mac, Excel 2016, Excel Web App
Crear medios de instalación de Windows - Soporte técnico de Microsoft
Aprende a crear medios de instalación para instalar o reinstalar Windows 7, Windows 8.1 o Windows 10.
Your CD or DVD drive is not recognized by Windows or other programs
This article describes a problem with CD or DVD drives not work, or is missing, or not recognized after installing or uninstalling programs.
Repair an Office application - Microsoft Support
Repair broken Office app installations. Depends on your Office installation type (Click-to-run or MSI-based), you'll see the following options to proceed with the repair.
Applies To:
Excel for Microsoft 365, Word for Microsoft 365, Outlook for Microsoft 365, PowerPoint for Microsoft 365, Access for Microsoft 365, OneNote for Microsoft 365, Publisher for Microsoft 365, Visio Plan 2, Excel 2021, Word 2021, Outlook 2021, PowerPoint 2021, Access 2021, Project Professional 2021, Project Standard 2021, Publisher 2021, Visio Professional 2021, Visio Standard 2021, Office 2021, OneNote 2021, Excel 2019, Word 2019, Outlook 2019, PowerPoint 2019, Access 2019, Project Professional 2019, Project Standard 2019, Publisher 2019, Visio Professional 2019, Visio Standard 2019, Office 2019, Excel 2016, Word 2016, Outlook 2016, PowerPoint 2016, Access 2016, OneNote 2016, Project Professional 2016, Project Standard 2016, Publisher 2016, Visio Professional 2016, Visio Standard 2016, 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, InfoPath 2013, Office 365 Germany - Enterprise, Office 365 Germany - Enterprise admin
Welcome to Copilot in Word - Microsoft Support
Copilot in Word ushers in a new era of writing, leveraging the power of AI. Check out this article to learn more.
Applies To:
Word for Microsoft 365, Word for Microsoft 365 for Mac, Word for the web, Word for iPad
Contact Us - Microsoft Support
Contact Microsoft Support. Find solutions to common problems, or get help from a support agent.