Download and install or reinstall Microsoft 365 or Office 2021 on a PC ...
Change from a 32-bit version to a 64-bit version or vice versa. Activate Windows. Fix Bluetooth problems in Windows. 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
Microsoft Support
Microsoft support is here to help you with Microsoft products. Find how-to articles, videos, and training for Microsoft Copilot, Microsoft 365, Windows, Surface, and more.
What's the difference between a paid Microsoft 365 subscription and the ...
A Subscribed badge means a Microsoft 365 subscription such as Microsoft 365 Family or Personal is already associated with your account and you can access many of your subscription benefits including installing the desktop apps.
微软软件许可条款 - support.office.com
软件只授予使用许可，而非出售 。 除非依据单独协议您具有商业使用之权利，否则您只能将 Word 、 Excel 、 PowerPoint 和 OneNote 用于个人、非商业用途。
All about PC gaming with Xbox | Xbox Support
How to make PC games work better. Troubleshoot game audio or video issues on Windows. Troubleshoot gameplay, performance, and stability issues on a Windows device. How to get software and driver updates for Windows devices. Optimize available storage by customizing game installations.
Windows help and learning
Find help and how-to articles for Windows operating systems. Get support for Windows and learn about installation, updates, privacy, security and more.
Windows 上的 NAT 类型显示“Teredo 无法获得资格” | Xbox Support
如果无法在 Windows 10 上连接到 Xbox 多人游戏，请转到“设置”>“游戏”>“Xbox 网络”。. 查找“NAT 类型”。. 如果状态显示“Teredo 无法获得资格”，则意味着电脑无法获得 Teredo IP 地址。. Windows 11. 如果在 Windows 11 上遇到类似问题，请执行以下操作：. 选择设备或 ...
尝试在 Xbox One 上玩游戏时出现 0x803F9008 错误 | Xbox Support
查看此处以了解我们当前正在跟踪的已知游戏问题，并了解可以对其执行的操作。. . 尝试在 Xbox One 上玩游戏时，你会看到以下错误代码：. 0x803F9008. 这意味着，你的 Xbox One 主机处于离线状态。.
下载并安装或重新安装 Office 2019、Office 2016 或 Office 2013
下载并安装或重新安装 Office 2019、Office 2016 或 Office 2013. 如果这是你 第一次 安装 Microsoft 365，则可能需要先执行一些设置步骤。. 展开下面的 “了解详细信息”部分。. 但是如果是重新安装 Microsoft 365，且已兑换了产品密钥并拥有与 Microsoft 365 相关联的帐户，请转 ...
Applies To:
Office 2019, Office 2016, Office 2016 for Mac, Office 2013
Manage background activity for apps in Windows
Some apps let you manage background activity, which determines what they can do when they’re in the background and not actively in use. Apps that can run in the background can send and receive notifications, sync information, and stay up to date.