Question

I am able to connect to my WCF service with the Win-form application, however i am not able to do so with my windows service. Whenever i fire open() to the proxy it throws the following error

The server has rejected the client credentials

Inner Exception: System.Security.Authentication.InvalidCredentialException: The server
has rejected the client credentials.
—> System.ComponentModel.Win32Exception: The logon attempt failed
— End of inner exception stack trace —
at System.Net.Security.NegoState.ProcessAuthentication(LazyAsyncResult
lazyResult)
at System.Net.Security.NegotiateStream.AuthenticateAsClient(NetworkCredential
credential, ChannelBinding binding, String targetName, ProtectionLevel
requiredProtectionLevel, TokenImpersonationLevel
allowedImpersonationLevel)
at System.Net.Security.NegotiateStream.AuthenticateAsClient(NetworkCredential
credential, String targetName, ProtectionLevel
requiredProtectionLevel, TokenImpersonationLevel
allowedImpersonationLevel)
at System.ServiceModel.Channels.WindowsStreamSecurityUpgradeProvider.WindowsStreamSecurityUpgradeInitiator.OnInitiateUpgrade(Stream
stream, SecurityMessageProperty& remoteSecurity)

Tried searching for the solution, but none fitting my requirements, hence posted.

Please help…

Update 1:

@A.R., Tried using

client.ClientCredentials.Windows.AllowedImpersonationLevel =
    System.Security.Principal.TokenImpersonationLevel.Impersonation;

but to no avail.

Update 2:

WCF service Configuration

<system.serviceModel>
    <diagnostics performanceCounters="All" />
    <bindings>
      <netTcpBinding>
        <binding name="myBindingForLargeData" maxReceivedMessageSize="5242880" maxConnections="10">
          <readerQuotas maxDepth="64" maxStringContentLength="5242880" maxArrayLength="16384"
                        maxBytesPerRead="4096" maxNameTableCharCount="16384"/>
        </binding>
      </netTcpBinding>
    </bindings>
    <services>
      <service behaviorConfiguration="WCFService.ServiceBehavior"
        name="WCFService.CollectorService">
        <endpoint address="" binding="netTcpBinding" bindingConfiguration="myBindingForLargeData"
          name="netTcpEndPoint" contract="WCFService.ICollectorService" />
        <endpoint address="mex" binding="mexTcpBinding" bindingConfiguration=""
          name="mexTcpEndPoint" contract="IMetadataExchange" />
        <host>
          <baseAddresses>
            <add baseAddress="net.tcp://localhost:8010/WCFService.CollectorService/" />
          </baseAddresses>
        </host>
      </service>
    </services>
    <behaviors>
      <serviceBehaviors>
        <behavior name="WCFService.ServiceBehavior">
          <serviceMetadata httpGetEnabled="False"/>
          <serviceDebug includeExceptionDetailInFaults="True" />
          <serviceThrottling
          maxConcurrentCalls="32"
          maxConcurrentSessions="32"
          maxConcurrentInstances="32"
           />
        </behavior>
      </serviceBehaviors>
    </behaviors>
</system.serviceModel>

Answer 1

Thanks for all your help. i got the answer after few days of some research and trial n error method 🙂 well i know i am late to post the answer, but i think its better late than never.

So Here’s the solution

i had to make some changes in my configuration files (both client & server)

On the client side i added <security> tag as shown below

  <system.serviceModel>
    <bindings>
      <netTcpBinding>
        <binding name="netTcpEndPoint" closeTimeout="00:01:00" openTimeout="00:01:00" receiveTimeout="00:10:00" sendTimeout="00:10:00" transactionFlow="false" transferMode="Buffered" transactionProtocol="OleTransactions" hostNameComparisonMode="StrongWildcard" listenBacklog="10" maxBufferPoolSize="5242880" maxBufferSize="5242880" maxConnections="15" maxReceivedMessageSize="5242880">
          <readerQuotas maxDepth="32" maxStringContentLength="5242880" maxArrayLength="16384" maxBytesPerRead="4096" maxNameTableCharCount="16384" />
          <reliableSession ordered="true" inactivityTimeout="00:10:00" enabled="false" />
          <security mode="Transport">
            <transport clientCredentialType="Windows" protectionLevel="EncryptAndSign" />
            <message clientCredentialType="Windows" />
          </security>
        </binding>
      </netTcpBinding>
    </bindings>
    <client>
      <endpoint address="net.tcp://xx.xx.xx.xx:8010/WCFService.CollectorService/" binding="netTcpBinding" bindingConfiguration="netTcpEndPoint" contract="CloudAdapter.CloudCollectorService.ICollectorService" name="netTcpEndPoint">
      </endpoint>
    </client>
  </system.serviceModel>

and also added the same tag on the server side (WCF service configuration), as shown below

<bindings>
  <netTcpBinding>
    <binding name="myBindingForLargeData" maxReceivedMessageSize="5242880" maxConnections="10">
      <readerQuotas maxDepth="64" maxStringContentLength="5242880" maxArrayLength="16384"
                    maxBytesPerRead="4096" maxNameTableCharCount="16384" />
       <security mode="Transport">
         <transport clientCredentialType="Windows" protectionLevel="EncryptAndSign" />
         <message clientCredentialType="Windows" />
       </security>
    </binding>
  </netTcpBinding>
</bindings>

Hope this help a person in need 🙂

So the KEY is to make the <security> tag same over the client and the server configuration files.