Internet Explorer 11 was never Windows 10's primary browser—that would be the old, pre-Chromium version of Microsoft Edge. But IE did continue to ship with Windows 10 for compatibility reasons ...

4. Scroll down to Microsoft Windows until you see Internet Explorer 9. Uninstall it. 5. Reboot. 6. Go back to Control Panel, Uninstall Programs, and choose Turn Windows Features On and Off.