Power BI AS connector - too many automatic redirects

Hi all,

I'm trying to install the Power BI Analysis Services Connector for a POC to hook up an on-premise tabular model to Power BI.

I've opened all the necessary outbound ports, but when going through the initial configuration wizard - right after it attempts to "Sign in to your Power BI account" I receive an error:

"Too many automatic redirects were attempted"

Does anyone know what the cause of this might be? My corporation is pretty locked down, is it possible there are a few URL's I need to add to a whitelist to enable this?

Thanks!!!

Brett