Message ID: MC1020202
For Teams Room customers who are moving to the Intune Company Portal version 5.0.6152 or above through firmware updates or app-only updates have to ensure that Device Administrator (DA) privilege is enabled in their Microsoft Intune Portal.
This has been called out as a known issue: Known issues with Teams Rooms on Android
Note: If your organization does not utilize Teams Room, you can safely disregard this message.
[How this will affect your organization:]
Without DA being enabled, the customers will encounter the following error message on Android based Teams devices during sign-in:
"This device isn’t enrolled in device administrator. Contact your Admin."
[What you need to do to prepare:]
Ensure that Device Administrator (DA) privilege is enabled in their Microsoft Intune Portal as shared in the instructions given here: Intune and Conditional Access for Teams Phones
Source: Microsoft