RE: Business Central on Premise Power BI Integration
Normally when you follow the steps in the wizard, it should work.
It seems that AAD cannot connect to your BC On Prem, might there be a firewall blocking certain traffic? Are the ODATA ports open/enabled in the NST?
This issue indicates there's a problem with the configuration of the Azure registered application used by the service. The problem is typically caused by incorrect values for either the Redirect URL, Application ID, or Key fields in the application registration. A common problem deals with the redirect URLs. Make sure the Redirect URL matches the redirect URL in the Azure portal and the URL of the Web client. To fix this issue, run the Set Up Azure Active Directory assisted setup and compare the values with the app registration in Azure.