eM Client unable to contact the licensing server

Frequently Asked Questions
1

I’ve a firewall and proxy in my network, therefore emClient cannot contact the licensing server (status 401: Unauthorized).
What can I do in order to solve this issue (open rules, setup proxy settings, etc…)?

2

same issue

3

This reply was created from a merged topic originally titled Unable to contact License Server.

I recently installed eMClient and am having issues activating my pro license due to an error contacting the license server.    Some known background:

1: Yes, I am behind a proxy. I have added emClient as an exception to my Windows Firewall, but does not make any difference…  I have not found a way to add an exception to the proxy.

HOWEVER, the above stated, I AM ABLE TO DO TO THE FOLLOWING IN THE BROWSER:

in the address bar type:

http://licensing.emclient.com:80

that does bring me to a location, prompting me for login credentials… (that I do not have etc., but  I am seemingly connected)?

So it seems, the browser is able to get to the licensing server, but not emClient? 

Any help is greatly appreciated.