Hi,
I want to confirm that what system have you used?
You can enable IE11 by the following steps.
Click Start button, navigate to:
Control Panel – Program and Features – Turn Windows features on or off – enable Internet Explorer 11.
You can also check this article for further help.
How to locate and open Internet Explorer in Windows 10
https://answers.microsoft.com/en-us/insider/wiki/insider_internet-insider_ie/how-to-locate-and-open-internet-explorer-in/4b067f8b-a0dc-4fba-9e63-00fb14ea82e8
Best Regards,
Tao
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