在电脑或 Mac 上下载并安装或重新安装 Microsoft 365 或 Office 2021 - Microsoft 支持
准备好安装了吗? 在开始之前,请确保电脑或 Mac 满足 系统要求。. 如果你已兑换产品密钥,只需重新安装应用,或者知道你已通过工作或学校分配了许可证,则可以跳到登录部分 ,下载并安装 Microsoft 365 或 Office。 但是,如果是 首次 安装 Microsoft 365 或 Office,可能需要先执行一些步骤。
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
Battery saving tips for Windows - Microsoft Support
Learn how to extend your PC's battery life using battery saver and other power-saving tips for Windows.
Manage app passwords for two-step verification - Microsoft Support
Office 2013 clients (including Outlook) support new authentication protocols and can be used with two-step verification. This support means that after two-step verification is turned on, you'll no longer need app passwords for Office 2013 clients.
Upload photos and files to OneDrive - Microsoft Support
Learn how to upload files to OneDrive. Save photos or files to OneDrive using the website, desktop, or mobile app.
Applies To: OneDrive (home or personal), OneDrive for Mac, OneDrive for Windows
OneDrive release notes - Microsoft Support
Learn about the latest feature updates and bug fixes for the OneDrive sync app across all devices.
Applies To: OneDrive for Business, SharePoint Server Subscription Edition, SharePoint Server 2019, SharePoint in Microsoft 365, Microsoft 365 admin, OneDrive (work or school), OneDrive (work or school) operated by 21Vianet, OneDrive for Mac, OneDrive for Windows, SharePoint admin center, SharePoint in Microsoft 365 Small Business, SharePoint operated by 21Vianet
Get Windows Media Player - Microsoft Support
Learn how to get Windows Media Player 12 for Windows 10, Windows 8.1, and Windows 7.
Windows 11和安全启动 - Microsoft 支持
了解如何更改设置以启用安全启动(如果无法升级到 Windows 11因为你的电脑当前无法安全启动)。
VLOOKUP 函数 - Microsoft 支持
了解如何在 Excel 中使用函数 VLOOKUP 逐行查找表或区域中的数据。 我们的分步指南使 excel 中的 vlookup 变得简单高效。
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
July 9, 2024—KB5040442 (OS Builds 22621.3880 and 22631.3880)
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Windows 10, version 20H2 and Windows Server, version 20H2 update history; End of service statement; May 9, 2023—KB5026361 (OS Builds 19042.2965, 19044.2965, and 19045.2965)