File Explorer in Windows | Microsoft Support
Find and open File Explorer in Windows, and customize Quick access by pinning and removing files and folders.
Sign in to Microsoft 365
Learn how to sign in to Office or Microsoft 365 from a desktop application or your web browser.
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, Project Online Desktop Client, Publisher for Microsoft 365, 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, Excel 2024, Word 2024, Outlook 2024, PowerPoint 2024, Access 2024, OneNote 2024, Project Professional 2024, Project Standard 2024, Visio Professional 2024, Visio Standard 2024, Office 2024, Excel 2024 for Mac, Word 2024 for Mac, Outlook 2024 for Mac, PowerPoint 2024 for Mac, OneNote 2024 for Mac, Office 2024 for Mac, Excel 2021, Word 2021, Outlook 2021, PowerPoint 2021, Access 2021, Project Professional 2021, Project Standard 2021, Publisher 2021, Visio Professional 2021, Visio Standard 2021, Excel 2021 for Mac, Word 2021 for Mac, Outlook 2021 for Mac, PowerPoint 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, 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, OneNote for Mac, Microsoft 365 for home, Office 365 Small Business, Microsoft 365 admin, Project Online, Microsoft 365 for Mac, Project for Office 365
Find your error code | Xbox Support
This page features a list of common error codes and solutions. Learn how to find your error code quickly.
Subscriptions & billing | Xbox Support
Get more information about managing your Xbox subscriptions, issues with billing, and more.
为 Windows 创建安装媒体 | Microsoft Support
安装媒体（如 U 盘）可用于安装 Windows 的新副本、执行 Windows 的全新安装或重新安装 Windows。 若要创建安装媒体，请转到 软件下载网站，可在其中找到分步说明。 在该网站上，可以选择 Windows 版本并在 USB 闪存上创建安装媒体。 或者，可以创建一个 ISO 文件，用于虚拟机 (VM) ，或用于将安装媒体 ...
查找你的 Windows 产品密钥 | Microsoft Support
了解如何查找用于激活的 Windows 产品密钥，以及何时改用数字许可证。
Applies To:
Microsoft account dashboard
适用于电脑的游戏服务修复工具 | Xbox Support
如果在电脑上安装或更新游戏服务时遇到问题，或者你注意到电脑版 Xbox 应用启动时缺少内容，则可能需要下载并运行适用于电脑的游戏服务修复工具。
查找 BitLocker 恢复密钥 | Microsoft Support
重要 Microsoft 支持部门无法检索、提供或重新创建丢失的 BitLocker 恢复密钥。
XBOX Update Preview Release Notes | Xbox Support
Omega Ring (2608.260803-2200) Hey XBOX Insiders! We are releasing a new XBOX Update Preview to the Omega ring today. Continue reading below to learn all about what's included with this update.
打开“设备管理器” - Microsoft 支持
Microsoft 教育版 教育设备 Microsoft Teams 教育版 Microsoft 365 教育版 Office 教育版 教育工作者培训和开发 面向学生和家长的优惠 ...