@Atomz4peace
Thank you for your detailed post! I was able to replicate your issue and will post my findings below.
REST API:
GET https://management.azure.com/subscriptions/{subscriptionId}/resourcegroups/{resourceGroupName}?api-version=2020-06-01
Error Message:
Workaround using Postman:
Use Postman with the Microsoft Graph API - Full documentation
Azure REST APIs with Postman in 2 Minutes
Since I wasn't able to figure out how to set the scope to "https://management.azure.com/.default" within Graph Explorer for the AAD token, I ended up using Postman as my workaround for running the managment.azure.com REST API.
If you have any other questions, please let me know.
Thank you for your time and patience throughout this issue.
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