Webapplication Can't Access Wcf Service Deployed On Same Machine

[Epsicoder]

We have a WebApp & WCF service running under AppPools A1(using service account User1) & A2(using service account User2) respectively. While webapp is trying to connect to wcf service, we are getting following error System.Net.Sockets.SocketException: A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond

The only way I can make webapplication access the wcf service is if I m logged in to the web server using the service account User2. Once the service account user logs off the server, the same error appears.

Here is the web server/app configuration .NET version : v 4.0 IIS : 10.0.14393.0 OS : Windows Server 2016

[Buenchico]

I'm out of my depth here but googling 'wcf same machine' seems to bring up several links that look as if they might be of interest. Worth a try, perhaps?

[Baldric]

I Googled Epsicoder,