[There is no Citrix XenApp server configured on the specified address.]

I must say that this is one of the most baffling error messages with no known resolution until now! I think I found the cause of the problem and the resolution.

 

The issue is with the Citrix Receiver version!  Yes, I know...hard to believe...but it is. Here is how I found out...

 

Our organization has an office in Eastern Europe with a local XenApp 5.0 Farm. Out of the blue the local Admin called to say they were getting the error: Cannot connect to the Citrix XenApp server. There is no Cirix SSL server configured on specified address."  After pulling my hair out, combing the internet, etc., I was able to nail it down to the issue being with the Citrix Receiver version.  We found out that a machine with Citrix 13.1 could connect without the error.  But he was using Citrix Receiver 14.2 to connect to a XenApp 5.0 Farm

 

So, I told him to downgrade to Citrix Receiver 13.1, for the other machines and problem solved!

 

Hope this helps someone from going bald early...-:)