检查你的 DirectX 版本 - Microsoft 支持
检查你的版本. DirectX 是许多 Windows 游戏都需要的一种多媒体技术套件。 如果你的电脑未安装正确版本的 DirectX（产品包装盒上应标有所需的版本），游戏可能无法正常运行。
Activate Office 2007 - Microsoft Support
To activate an Office 2007 program, you must enter your 25-digit product key, if you haven't already done so during Setup.
Applies To:
Picture Manager 2007, SharePoint Designer 2007, Excel 2007, Word 2007, Outlook 2007, PowerPoint 2007, Access 2007, OneNote 2007, Project 2007, Project Standard 2007, Publisher 2007, Visio 2007, Visio Standard 2007, Office 2007, InfoPath Edit Mode 2007
Microsoft Bing help - Microsoft Support
Explore subscription benefits, browse training courses, learn how to secure your device, and more.
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.
How to add an account in OneDrive - Microsoft Support
If you already have an account signed in to OneDrive and you want to add or remove another account, you’ll do that in OneDrive Settings.
Applies To:
OneDrive (work or school), OneDrive (home or personal), OneDrive for Mac, OneDrive for Windows
Use Smart charging in Windows - Microsoft Support
Learn how Smart charging in Windows can help your battery last longer over time.
Contact - Microsoft Support
Contact Microsoft Support. What's new. Surface Pro; Surface Laptop; Surface Laptop Studio 2
Create a site with SharePoint Online - Microsoft Support
Training: Switch to SharePoint Online from Google Sites and start working together with these quick instructions on how to access, upload, and share the content, information, and apps your team relies on with SharePoint Online.
Applies To:
SharePoint in Microsoft 365
在电脑或 Mac 上下载并安装或重新安装 Microsoft 365 或 Office 2021 - Microsoft 支持
了解如何在电脑或 Mac 上安装、重新安装或激活 Microsoft 365 或 Office 2019。
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
Snap your windows - Microsoft Support
See how to arrange all your open windows using the mouse, keyboard, or the Snap Assist feature in Windows.