Microsoft On-Premises Data Gateway installation

We are about to utilize the Microsoft On-Premises Data Gateway for a project. We are presently using Power BI Report Server but will now need to create reports that will be available externally Before doing the install on the server, I tested an install on my PC following these instructions:

https://docs.microsoft.com/en-us/data-integration/gateway/service-gateway-install

I got to step 3 where it asks to enter the email address for our Office 365 organization account. By personal account has been set up with a Power BI license so I have been told that I could enter m email address under "Email address to use with this gateway". I clicked sign-in but it was not successful. The window listed a couple of issues:

Network request returned unexpected error.
No connection could be made because the target machine actively refused it 127.0.0.1:80
at System.Net.Sockets.Socket.InternalEndConnect(IAsyncResult asyncResult)
at System.Net.Sockets.Socket.EndConnect(IAsyncResult asyncResult)
at System.Net.ServicePoint.ConnectSocketInternal(Boolean connectFailure, Socket s4, Socket s6, Socket& socket, IPAddress& address, ConnectSocketState state, IAsyncResult asyncResult, Exception& exception)

Network connectivity is limited.

Ensure network access is functioning correctly. Firewall and proxy configurations may need to be changed.

This entry says "No connection was made because the target machine actively refused it 127.0.0.1:80"

127.0.0.1 is the name of the local host. The :80 means port 80 is not free. Could this be a firewall issue? Any help with getting this going would be appreciated.