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Home/ Questions/Q 4052596
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Editorial Team
  • 0
Editorial Team
Asked: May 20, 20262026-05-20T14:20:22+00:00 2026-05-20T14:20:22+00:00

I am getting the following error The Address property on ChannelFactory.Endpoint was null. The

  • 0

I am getting the following error

“The Address property on
ChannelFactory.Endpoint was null. The
ChannelFactory’s Endpoint must have a
valid Address specified.”

and I am not sure what I am doing wrong. Does anybody see know what is the reson of it? Below are my project’s App.config Server and Client Side
Thank you for help, regards

 <system.serviceModel>
    <services>
      <service name="Server.DualService" behaviorConfiguration="NetTcpBehavior">
        <endpoint address=""
              binding="netTcpBinding"
              bindingConfiguration="DuplexBinding"
              contract="Server.IDualService" />

        <endpoint address="mex" binding="mexTcpBinding" contract="Server.IDualService" />
        <host>
          <baseAddresses>
            <add baseAddress="net.tcp://localhost:8731/Service/DualService/" />
          </baseAddresses>
        </host>
      </service>
      <service name="Server.PhoneService" behaviorConfiguration="Server.PhoneServiceBehavior">
        <endpoint address="" binding="wsHttpBinding" bindingConfiguration="" contract="Server.IPhoneService" />
        <endpoint address="mex" binding="mexHttpBinding" contract="IMetadataExchange" />
        <host>
          <baseAddresses>
            <add baseAddress="http://localhost:4444/Service/PhoneService" />
          </baseAddresses>
        </host>
      </service>
    </services>
    <behaviors>
      <serviceBehaviors>
        <behavior name="Server.DualServiceBehavior">
          <serviceMetadata httpGetEnabled="true" />
          <serviceDebug includeExceptionDetailInFaults="true" />
        </behavior>
        <behavior name="Server.PhoneServiceBehavior">
          <serviceMetadata httpGetEnabled="true" />
          <serviceDebug includeExceptionDetailInFaults="true" />
        </behavior>
        <behavior  name="NetTcpBehavior">
          <serviceThrottling maxConcurrentSessions="10000" />
        </behavior>
      </serviceBehaviors>
    </behaviors>
    <bindings>
      <netTcpBinding>
        <binding name="DuplexBinding" sendTimeout="00:00:11">
          <reliableSession enabled="true" />
          <security mode="None" />
        </binding>
      </netTcpBinding>
    </bindings>
  </system.serviceModel>

CLIENT SIDE

<system.serviceModel>
    <bindings>
        <basicHttpBinding>
            <binding name="DefaultBinding_IPhoneService" closeTimeout="00:01:00"
                openTimeout="00:01:00" receiveTimeout="00:10:00" sendTimeout="00:01:00"
                allowCookies="false" bypassProxyOnLocal="false" hostNameComparisonMode="StrongWildcard"
                maxBufferSize="65536" maxBufferPoolSize="524288" maxReceivedMessageSize="65536"
                messageEncoding="Text" textEncoding="utf-8" transferMode="Buffered"
                useDefaultWebProxy="true">
                <readerQuotas maxDepth="32" maxStringContentLength="8192" maxArrayLength="16384"
                    maxBytesPerRead="4096" maxNameTableCharCount="16384" />
                <security mode="None">
                    <transport clientCredentialType="None" proxyCredentialType="None"
                        realm="">
                        <extendedProtectionPolicy policyEnforcement="Never" />
                    </transport>
                    <message clientCredentialType="UserName" algorithmSuite="Default" />
                </security>
            </binding>
            <binding name="DefaultBinding_IDualService" closeTimeout="00:01:00"
                openTimeout="00:01:00" receiveTimeout="00:10:00" sendTimeout="00:01:00"
                allowCookies="false" bypassProxyOnLocal="false" hostNameComparisonMode="StrongWildcard"
                maxBufferSize="65536" maxBufferPoolSize="524288" maxReceivedMessageSize="65536"
                messageEncoding="Text" textEncoding="utf-8" transferMode="Buffered"
                useDefaultWebProxy="true">
                <readerQuotas maxDepth="32" maxStringContentLength="8192" maxArrayLength="16384"
                    maxBytesPerRead="4096" maxNameTableCharCount="16384" />
                <security mode="None">
                    <transport clientCredentialType="None" proxyCredentialType="None"
                        realm="">
                        <extendedProtectionPolicy policyEnforcement="Never" />
                    </transport>
                    <message clientCredentialType="UserName" algorithmSuite="Default" />
                </security>
            </binding>
        </basicHttpBinding>
        <wsHttpBinding>
            <binding name="WSHttpBinding_IPhoneService" closeTimeout="00:01:00"
                openTimeout="00:01:00" receiveTimeout="00:10:00" sendTimeout="00:01:00"
                bypassProxyOnLocal="false" transactionFlow="false" hostNameComparisonMode="StrongWildcard"
                maxBufferPoolSize="524288" maxReceivedMessageSize="65536"
                messageEncoding="Text" textEncoding="utf-8" useDefaultWebProxy="true"
                allowCookies="false">
                <readerQuotas maxDepth="32" maxStringContentLength="8192" maxArrayLength="16384"
                    maxBytesPerRead="4096" maxNameTableCharCount="16384" />
                <reliableSession ordered="true" inactivityTimeout="00:10:00"
                    enabled="false" />
                <security mode="Message">
                    <transport clientCredentialType="Windows" proxyCredentialType="None"
                        realm="">
                        <extendedProtectionPolicy policyEnforcement="Never" />
                    </transport>
                    <message clientCredentialType="Windows" negotiateServiceCredential="true"
                        algorithmSuite="Default" establishSecurityContext="true" />
                </security>
            </binding>
        </wsHttpBinding>
    </bindings>
    <client>
        <endpoint binding="basicHttpBinding" bindingConfiguration="DefaultBinding_IPhoneService"
            contract="IPhoneService" name="DefaultBinding_IPhoneService_IPhoneService" />
        <endpoint binding="basicHttpBinding" bindingConfiguration="DefaultBinding_IDualService"
            contract="IDualService" name="DefaultBinding_IDualService_IDualService" />
        <endpoint address="http://localhost:4444/Service/PhoneService"
            binding="wsHttpBinding" bindingConfiguration="WSHttpBinding_IPhoneService"
            contract="ServiceReference2.IPhoneService" name="WSHttpBinding_IPhoneService">
            <identity>
                <userPrincipalName value="PANDZIA-PC\PANDZIA" />
            </identity>
        </endpoint>
    </client>
</system.serviceModel>
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  1. Editorial Team
    Editorial Team
    2026-05-20T14:20:23+00:00Added an answer on May 20, 2026 at 2:20 pm

    There is some problem with your configuration. Server specifies DualService over net.tcp but client uses BasicHttpBinding and does not specify address. Also your client has configuration for more endpoint then your service expose and mex endpoint in DualService has incorrect contract (should be IMetadataExchange).

    Only client endpoint for PhoneService looks correct.

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