Security mode= Transport throwing exception.

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C#

.NET

WCF

.NET4

netTcpBinding in my service app.config has security mode set to ‘None’and that is working fine.Now when I change it to the default mode of nettcpbinding i.e.Mode=Transport and clientCredentialType="Windows", I get following exception in GUI project while connecting to the this service

The socket connection was aborted. This could be caused by an error processing your message or a receive timeout being exceeded by the remote host, or an underlying network resource issue. Local socket timeout was '00:00:59.6982306'.

I viewed service trace in trace viewer and that showed the following error message: The message with To 'net.tcp://localhost:9200/MyService/mex/mex' cannot be processed at the receiver, due to an AddressFilter mismatch at the EndpointDispatcher. Check that the sender and receiver's EndpointAddresses agree. if I create a new service with a nettcpendpoint having default transport security, that works fine.

If anybody has any idea about this, please let me know. I start getting error as soon as i change security mode = Transport, but for any new application this is the default mode and new application works fine.
App.config(working fine)

<binding name="tcpBinding" portSharingEnabled="true">
                   <security mode="None">
                       <transport clientCredentialType="None" protectionLevel="None" />
                       <message clientCredentialType="None"/>
                   </security>

when i change it to following, i start getting error:
 <binding name="tcpBinding" portSharingEnabled="true">
                    <security mode="Transport">
                        <transport clientCredentialType="Windows" protectionLevel="EncryptAndSign" />
                        <message clientCredentialType="None"/>
                    </security>
                </binding>
               </binding>