IWA Authentication Scheme returns refused to connect error

Document ID : KB000076800
Last Modified Date : 09/04/2018
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I'm running a Web Agent on IIS, when I try to reach the IWA Authentication
Scheme, I get the following error in the browser :

This site can’t be reached mymachine.mydomain.com refused to
connect. Try: Checking the connection Checking the proxy and the

The URL I'm trying to reach is 


When I try this URL 


then I get the page. How can I fix this ?
You get this issue because IIS isn't configure to handle SSL connection. 
To solve this issue, configure IIS to handle SSL connection. Here's a sample of such configuration for IIS7.

How to Set Up SSL on IIS 7