Scheduled refresh MS exchange PowerBI Service

Hi all,

Is there a solution for this problem? I am facing a similar issue:

1) Cleared permission

2) Connected using UPN:

If I connect using Microsoft account I get the following error:

Using the exchange account option and UPN I can get a connection.

3) Published the report and tried to add a refresh schedule:

First tried using Basic auhtentication method (I tried Organizational as well as Private Privacy level):

This gives the following error:

Next tried using OAuth2. This gives the following error:

Any suggestions?

Best,

s-in-a-triangle