在 PC 或 Mac 上下載並安裝或重新安裝 Microsoft 365 或 Office 2021
準備安裝了嗎？ 開始之前，請確定您的PC或Mac符合 系統需求。. 如果您已兌換產品密鑰、只是重新安裝應用程式，或是知道您已透過公司或學校指派授權，您可以跳到登入以 下載並安裝 Microsoft 365 或 Office 章節。 不過，如果這是您 第一次 安裝 Microsoft 365或 Office，您可能需要先執行一些步驟。
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, Office.com
如何在 Windows 中备份和还原注册表 - Microsoft 支持
手动备份注册表. 选择“ 开始 ”，在搜索框中键入 regedit.exe ，然后按 Enter。 如果系统提示你输入管理员密码或进行确认，请键入密码或提供确认信息。
Temas de escritorio - Soporte técnico de Microsoft
Un tema es una combinación de imágenes de fondo de escritorio, colores de ventana y sonidos. Obtener un tema. Para obtener un tema, expande una de las categorías siguientes, selecciona un vínculo para el tema y, a continuación, selecciona Abrir.El tema se guardará en el equipo y se aplicará en el escritorio.
Microsoft 支持
Microsoft 支持可帮助你处理 Microsoft 产品的问题。 查找有关 Microsoft Copilot、Microsoft 365、Windows、Surface 等操作方法的文章、视频和培训。
App & browser control in Windows Security - Microsoft Support
App & browser control in Windows Security provides the settings for Microsoft Defender SmartScreen, which helps protect your device from potentially dangerous apps, files, websites, and downloads.
Microsoft 365 语言配件包 - Microsoft 支持
了解如何下载、安装和配置 Microsoft 365 语言配件包，以向 Microsoft 365 添加其他显示、帮助和校对工具。
Applies To:
Excel for Microsoft 365, Word for Microsoft 365, Outlook for Microsoft 365, PowerPoint for Microsoft 365, Access for Microsoft 365, Project Online Desktop Client, 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, OneNote 2021, Excel 2019, Word 2019, Outlook 2019, PowerPoint 2019, Access 2019, Project Professional 2019, Project Standard 2019, Publisher 2019, Visio Professional 2019, Excel 2016, Word 2016, Outlook 2016, PowerPoint 2016, Access 2016, OneNote 2016, Project Professional 2016, Project Standard 2016, Publisher 2016, Visio Professional 2016, 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.com
Office Help & Training
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Family & online safety | Xbox Support
Learn about Xbox online safety so you can manage your family's accounts.
Microsoft Edge help & learning
Experience AI-powered browsing with the new Bing built-in. Get comprehensive answers, summarized information, and find inspiration side-by-side in Microsoft Edge.
Nous contacter : Support Microsoft
Contactez le support Microsoft. Recherchez des solutions aux problèmes courants ou bénéficiez de l’aide d’un agent de support.