The Microsoft Endpoint Manager admin center is built on Azure. The Azure team announced that the end of support for Internet Explorer 11 (IE 11) admin access to the Admin Portal web app UI is on March 31, 2021. Therefore, as a reminder, Intune will move to end admin center support for IE 11 on March 31, 2021. Please move to Microsoft Edge or another supported browser at that time to administer any of your Microsoft services built on Azure.
How this will affect your organization
This will only impact you if you’re using IE 11 to access the Microsoft Endpoint Manager admin center.
What you need to do to prepare
Move to a different supported browser after March 31, 2021 for your Endpoint Manager and Intune administration. Note that IE 11 service lifecycle follows the schedule listed below (however, check the documentation linked for the latest dates; these are provided for your convenience):