Use Find my device to locate and lock your lost or stolen Windows devices.

Get answers to common questions about Windows 11 and Windows 10 in S mode.

Find out the steps you can take if you receive a message telling you a driver can't load on your device.

Learn how to use antivirus protection in Windows Security to protect your Windows PC against malware, viruses, and other threats.

Learn how to use drag and drop to transfer content between your Android device and PC.

Windows Security is pre-installed on Windows 10 and ready for you to use at any time.

Learn how to change the refresh rate for your display in Windows to determine how smoothly motion appears on your screen.

Learn how to change the power mode on your Windows PC to preserve your battery, limit notifications, and background activity.

Learn what you can do if you're not receiving account aign-in verification codes.

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。