Learn what to do if you find charges you don't recognize from Microsoft.

Learn about the differences between a Microsoft 365 subscription, Office 2016, and the free Office Online apps.

Learn how to run a disk cleanup in Windows including deleting temporary and system files to free up disk space.

Learn how to change settings to enable Secure Boot if you are not able to upgrade to Windows 11 because your PC is not currently Secure Boot capable.

通过 Wi-Fi 与其他设备共享 Internet 连接，将 Windows 电脑变成移动热点。 你可以共享 WLAN、以太网或手机网络数据连接。

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

使用电脑健康状况检查应用可以获取有关 Windows 设备运行状况的最新信息，从而帮助你采取措施提高设备性能和排查性能问题。

Learn how to create a OneDrive backup on your PC. Set up OneDrive PC folder backup to access, manage, stop, or fix problems with PC folder backup.

To open the Start menu—which contains all your apps, settings, and files—do either of the following: On the left end of the taskbar, select the Start icon.

Try these troubleshooting steps if Microsoft Store does not launch in Windows 10.