About Genuine Windows - Microsoft Support
Find answers to common questions about genuine Windows software.
Office Help & Training
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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
Returning items you bought from Microsoft for exchange or refund
Learn how to receive a refund or exchange for items purchased from Microsoft.
Applies To:
Microsoft account dashboard
How to perform a clean boot in Windows - Microsoft Support
Describes how to use the clean boot process to troubleshoot a problem in Windows 8.1, Windows 8, Windows 7, or Windows Vista.
Install Windows 7 Service Pack 1 (SP1) - Microsoft Support
Learn how to install Windows 7 Service Pack 1 (SP1). Includes info about how to get the download, requirements, and more.
付费 Microsoft 365 订阅与免费 Web 应用之间的区别是什么？
Free. 免费锁屏提醒表示活动Microsoft 365 家庭版或个人订阅不与登录帐户相关联。. 只有 Word、Excel 和 PowerPoint 的免费 Web 版本可供使用。 若要在浏览器中访问这些应用，只需使用 Microsoft 帐户登录到 Microsoft365.com，并从应用启动器 选择所需的应用。. 免费试用Word、Excel 和 PowerPoint
订阅和计费 | Xbox Support
获取与管理你的 Xbox 订阅、帐单问题等有关的详细信息。
激活 Windows - Microsoft 支持
了解如何使用产品密钥或数字许可证激活 Windows、检查激活状态，以及链接Microsoft 帐户。
Microsoft Edge 帮助和学习
获取 Microsoft Edge 的帮助和支持。 查找 Microsoft Edge 支持内容、操作方法文章、教程等。