Unable to schedule refresh SharePoint Online O365 List using Organizational account

[Anonymous]

I have designed the dashboards using Power BI desktop by connecting to my organization's SharePoint Online O365 and it's working fine.

Once I publish this to PowerBI services, I am unable to schedule the refresh. I get the following error:

When I click Edit credentials and choose OAuth2, I get another error:

If I choose Windows or Anonymous authentication type, I get the following error: 

Please help!!!

[Anonymous · Accepted solution]

It is soooo strange the OAuth2 authentication worked through EDGE browser. Previously I was using Internet Explorer 11. (Both on Windows 10)