Use OneDrive as a cloud backup to share your files and folders with others. Learn how to control permissions, allow editing, or set expiration dates.

联系支持人员 有关 Microsoft 帐户和订阅的帮助，请访问 帐户和计费帮助。. 如需技术支持，请转到联系 Microsoft 支持人员，输入问题并选择“获取帮助”。 如果仍然需要帮助，请选择“联系支持人员”以转至最佳支持选项。 管理员

Microsoft .NET Framework 4.8.1 is a highly compatible and in-place update to .NET Framework 4.8. It includes native support for the Arm64 architecture (Windows 11+), accessibility improvements as well as other improvements.

A product key is a 25-character code that's used to activate Windows and helps verify that Windows hasn't been used on more PCs than the Microsoft Software License Terms allow.

Learn how to troubleshoot USB-C problems in Windows and fix USB devices, ports, and adapters not working properly.

Learn how to reinstall Windows on your PC and how activation works after it's installed.

The new MSN website brings you the best in online information and is uniquely yours.

Word 2021 for Windows gives you new ways to create compelling content. This article provides an overview of the new features you can discover.

Go to Settings > Apps > Apps & features to change whether you're shown app recommendations when trying to install apps from outside the Store.

了解如何使用 Windows 上的 Game Bar 来捕获游戏过程、与好友聊天和跟踪成就。