Please back up your important data in the C drive. Please note that restoring the computer to its factory settings will clear all data in the C drive, including personal files in Desktop, Downloads, and Documents. Note: It is recommended that you back up data and press F10 to restore the system. If the issue persists, download and reinstall Internet Explorer from the Microsoft official website.Check whether you can now find Internet Explorer in Cortana Search.Check Internet Explorer 11, click OK, and restart your computer.Click Programs > Programs and Features > Turn Windows features on or off.Copilot in Windows Microsoft 365 Windows 11 apps Microsoft Store. Right-click the ISO file and select Mount. Enter Control Panel in Cortana Search in the lower left corner of the taskbar to display the Control Panel page. On the General tab, click Change and select Windows Explorer for the program you would like to use to open ISO files and select Apply.You can also perform the following steps: Press Win+ I to open Settings, click Apps > Apps & features > Manage optional features > Add a feature, select Internet Explorer 11, and wait until the installation is complete.