clicking an Internet Explorer icon will launch Microsoft Edge, and this is a behavior that cannot be changed 

Internet Explorer 11 has retired and is officially out of support—what you need to know | Windows Experience Blog 

With 3 months left before IE retirement, new enhancements arrive in Microsoft Edge for IE mode | Windows Experience Blog 

Test IE mode in Microsoft Edge with Internet Explorer Driver 

Today, we’re announcing that Microsoft 365 apps and services will no longer support Internet Explorer 11 (IE 11) by this time next year.

• Beginning November 30, 2020, the Microsoft Teams web app will no longer support IE 11.
• Beginning August 17, 2021, the remaining Microsoft 365 apps and services will no longer support IE 11. 

Bootstrap 5 dropping IE 10 & 11 browser support: where does that leave us? 

The Browser Monopoly 

As you may remember, Microsoft has removed the IE Mode feature from Microsoft Edge. THe company has limited it to enterprise customers and IT admins. They have also stated that the feature was released to the public for testing purposes only. Here is a bit of good news - you can re-enable IE Mode when needed with recent versions of Edge! 

A Microsoft exec has warned that Internet Explorer is a ‘compatibility solution’ and should only be used selectively. Preaching to the choir here, and this is, we suspect, the very end of IE's long story for us.