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
Windows Update Delivery Optimization and privacy
Select Delivery Optimization. Under Allow downloads from other PCs , select Devices on my local network. To stop downloading from or uploading to other PCs on the local network: Select Start > Settings > Windows Update > Advanced options. Select Delivery Optimization. Make sure Allow downloads from other PCs is turned Off.
管理 Microsoft 365 订阅或 Office 产品 - Microsoft 支持
在Microsoft帐户仪表板上，选择“ 服务 & 订阅 ”，查看所有与此帐户关联的Microsoft产品。. 登录. 找到 Office 产品并选择“ 安装 ”。. 按照提示安装或重新安装桌面应用。. 选择 “安装高级Microsoft 365 应用 ”，并按照提示安装或重新安装桌面应用。. 在“Microsoft 365 ...
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 for Microsoft 365 for Mac, Word for Microsoft 365 for Mac, Outlook for Microsoft 365 for Mac, PowerPoint for Microsoft 365 for Mac, OneNote for Microsoft 365 for Mac, Word for the web, OneNote for the web, PowerPoint for the web, Excel 2021, Word 2021, Outlook 2021, Access 2021, Project Professional 2021, Project Standard 2021, Publisher 2021, Visio Professional 2021, Visio Standard 2021, Office 2021, OneNote 2021, Excel 2021 for Mac, Word 2021 for Mac, Outlook 2021 for Mac, OneNote 2021 for Mac, Office 2021 for Mac, 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 2019 for Mac, Word 2019 for Mac, Outlook 2019 for Mac, PowerPoint 2019 for Mac, OneNote 2019 for Mac, Office 2019 for Mac, 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 admin, Outlook on the web, Word Web App, Microsoft account dashboard, New Outlook for Windows
订阅和计费 | Xbox Support
分享 Xbox Game Pass 订阅. 为你或你的孩子更新 Xbox 订阅. 确保你的 Xbox 数字订阅适用于你所在的国家或地区. 打开 Xbox 订阅的定期计费. 获取用于 Xbox 的 EA Play 的帮助.