Training: Learn how to create a spreadsheet, enter data, and create a chart in Excel.

Learn how to delete and restore files in OneDrive. Recover deleted files or folders from the OneDrive recycle bin.

Learn how to use Microsoft Edge for mobile devices, sync your browser data, and get answers to common questions.

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。

If either of the categories above apply to you, use the following procedures to update your browser: Update once. In the browser, go to Settings and more > Help and feedback > About Microsoft Edge (edge://settings/help).. If the About page shows Microsoft Edge is up to date., you don't need to do anything.

Microsoft is retiring the Windows legacy inbox Troubleshooters, such as Keyboard troubleshooter and Speech troubleshooter, and the Microsoft Support Diagnostic Tool (MSDT) that runs them.

Learn how to receive a refund or exchange for items purchased from Microsoft.

Explore OneDrive support, help, and learning resources. Learn how to protect your important files, documents, and memories with OneDrive.

Learn how to design professional-looking presentations with Microsoft 365. Create high quality, customized slides in a few clicks with PowerPoint Designer.

Surface Dock and Docking station greatly expand your Surface device's capabilities. By connecting keyboards, mice, webcams, and external monitors, you can turn your Surface into a multifunctional workstation.