Find your product key to activate Windows. 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 use drag and drop to transfer content between your Android device and PC.

Learn why it's important to have a backup, and how Windows Backup can help you keep your files and settings safe.

Find out how to use Game Bar to capture game play, chat with friends, track achievements, and more.

Learn how the Photos app for Windows lets you view photos and videos from your PC alongside those from OneDrive, and keeps them organized by date, album, or folder.

了解如何在移动设备、Windows 设备或 Xbox 主机上兑换 Microsoft/Xbox 礼品卡或其他代码。

Find out more about Xbox digital codes and gift cards, and how to troubleshoot issues redeeming content.

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。

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

Learn how to use Wi-Fi 7 and Wi-Fi 6 and WPA3 in Windows for better wireless coverage and network security.