Comments by BugRaptor (Top 2 by date)

Thank you for your answer.

I finally solved the communication issue by the following corrections:

1) On the Client side, my App.config file refered a wrong endpoint address.

2) On the server side I published the WCFServiceLibrary1 on http://localhost, I had to publish it in the refered /WebSite folder: http://localhost/WebSite

3) After these fixes, I didn't got the EndpointNotFoundException anymore, but I got a ProtocolException Unhandled, (405) Method not allowed when the Client tried to invoke a WCF service method.
I finally found this was due to a configuration issue in my .Net 4.5 platform: The HTTP Activation feature was not enabled !
Now the WCF calls finally work properly.
Thank you for your help.