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Download and install or reinstall Microsoft 365 or Office 2021 on a PC ...
Learn how to install, reinstall, or activate Microsoft 365 or Office 2019 on a PC or Mac.
Applies To: Office 2021, Office 2021 for Mac, Office 2019, Office 2019 for Mac, Microsoft 365 for home, Office for business, Office 365 Small Business, Microsoft 365 admin, Office 365 operated by 21Vianet, Office 365 operated by 21Vianet - Admin, Microsoft 365 for Mac, Office 365 Germany - Enterprise, Office 365 Germany - Enterprise admin
Troubleshoot installing Office - Microsoft Support
Help to fix install errors for Office, such as "can’t install Office", "something went wrong" or situations where install hangs or activation fails.
Applies To: Office 2021, Office 2021 for Mac, Office 2019, Office 2019 for Mac, Office 2016, Microsoft 365 for home, Office for business, Office 365 Small Business, Microsoft 365 admin, Microsoft 365 for Mac
Language packs for Windows - Microsoft Support
Learn how to download, install, and configure additional language packs for your version of Windows.
更改或删除单个页面上的页眉或页脚 - Microsoft 支持
更改第一页上的页眉或页脚,或者文档中的任何其他页面。
Applies To: Word for Microsoft 365, Word for Microsoft 365 for Mac, Word for the web, Word 2021, Word 2021 for Mac, Word 2019, Word 2019 for Mac, Word 2016
Find and lock a lost Windows device - Microsoft Support
Use Find my device to locate and lock your lost or stolen Windows devices.
Applies To: Microsoft account dashboard
Actualizar controladores manualmente en Windows
Aprende a actualizar controladores en Windows usando Administrador de dispositivos para actualizar o reinstalar un controlador.
Change your app recommendation settings in Windows
Go to Settings > Apps > Apps & features to change whether you're shown app recommendations when trying to install apps from outside the Store.
Create an ISO file for Windows 10 - Microsoft Support
Create an ISO file for Windows 10. Unlike in previous versions of Windows, you’ll need to use the media creation tool to create an ISO file to install Windows 10.
在Windows 11电脑上启用虚拟化 - Microsoft 支持
虚拟化可让你的电脑模拟不同的操作系统,例如 Android™ 或 Linux。 通过启用虚拟化,你可以访问更大的应用库,以便在电脑上使用和安装。
检查你的 DirectX 版本 - Microsoft 支持
检查你的版本. DirectX 是许多 Windows 游戏都需要的一种多媒体技术套件。 如果你的电脑未安装正确版本的 DirectX(产品包装盒上应标有所需的版本),游戏可能无法正常运行。