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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.
Download and install or reinstall Microsoft 365 or Office 2021 on a PC ...
From the Microsoft 365 home page select Install apps. Select Install (or depending on your version, Install apps> ). From the home page select Install apps (If you set a different start page, go to aka.ms/office-install .) For Microsoft 365 operated by 21 Vianet go to login.partner.microsoftonline.cn/account.
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.
Stay safe with a genuine Office license - Microsoft Support
Stay safe with a genuine Office license. After launching an Office app, you might receive a message that says Get genuine Office. If you see this, we've determined that the Office product installed on your device isn't legitimate and you may be a victim of software counterfeiting.
Applies To: Office 2019
Xbox | Xbox Support
你可以随时使用 Xbox 应用移动版更改你的玩家图片。. 从 Xbox 玩家图片库中进行选择,或直接从移动设备添加你自己的图像。. 在 Xbox 应用的底部菜单中选择你的玩家图片以访问“档案”选项卡。. 选择屏幕顶部你的玩家图片旁边的编辑图标。. 请执行下列操作 ...
Windows 11 System Requirements - Microsoft Support
These are the minimum system requirements your PC must meet to help enable a great computing experience: Processors/CPUs (Central Processing Units): 1 Ghz or faster with 2 or more cores and appearing on our list of approved CPUs . The processor in your PC will be a main determining factor for running Windows 11.
Xbox 0x803f9007
你尝试在 Xbox 主机上玩某款游戏时看到以下错误代码:. 0x803f9007. 这可能意味着下列情况之一:. 游戏光盘未在主机中。. 该游戏已购买并且下载,但你未登录和连接到 Xbox Live。. 该游戏试用期已过期,需要购买该游戏。. 若要解决此问题,请尝试以下解决方案 ...
Manage your Microsoft 365 subscription or Office product
For Microsoft 365 Family or Personal subscriptions: Select Install premium Microsoft 365 apps and follow the prompts to install or reinstall the desktop apps. On the Microsoft 365 subscription tab, select Manage. From here you can: Renew your subscription with a prepaid code or card. Learn more.
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
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.
使 Xbox | Xbox Support
通过云游戏和安装来玩 Xbox 主机游戏. 了解如何使用 Android、iOS 或 Windows 设备在 Xbox 上玩云游戏。.