Apr 21, 2015 04:27 PM|grambo25|LINK
I am having a similar issue when using a tcp endpoint. I had a test app that had been working up until the end of last week. After installing some Windows Updates, I started receiving the following exception:
An unhandled exception of type 'System.ServiceModel.EndpointNotFoundException' occurred in mscorlib.dll
Additional information: Could not connect to net.tcp://localhost:54321/TestService. The connection attempt lasted for a time span of 00:00:02.1251859. TCP error code 10061: No connection could be made because the target machine actively refused it 127.0.0.1:54321.