C# - accessing service reference with the headers Negotiate, Ntlm

app.config

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
    <system.serviceModel>
        <bindings>
            <basicHttpBinding>
                <binding name="NintexWorkflowWSSoap" 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="TransportCredentialOnly">
                    <transport clientCredentialType="Windows" proxyCredentialType="None" realm="" />
                        <message clientCredentialType="UserName" algorithmSuite="Default" />
                  </security>
                </binding>
            </basicHttpBinding>
        </bindings>
        <client>
            <endpoint address="http://intranet.aDomain.net/_vti_bin/nintexworkflow/workflow.asmx"
                binding="basicHttpBinding" bindingConfiguration="NintexWorkflowWSSoap"
                contract="Nintex.Service.NintexWorkflowWSSoap" name="NintexWorkflowWSSoap" />
        </client>
    </system.serviceModel>
</configuration>

comment.mkdown

this gist solves the MessageSecurityException "The HTTP request is unauthorized with client authentication scheme 'Ntlm'. The authentication header received from the server was 'Negotiate,NTLM'.".

programm.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Security.Principal;
using System.ServiceModel;

namespace TheTestConsole
{
    class Program
    {
        static void Main(string[] args)
        {
            var client = new Nintex.Service.NintexWorkflowWSSoapClient("NintexWorkflowWSSoap");
            client.ClientCredentials.Windows.AllowedImpersonationLevel = TokenImpersonationLevel.Impersonation;
            client.ClientCredentials.Windows.AllowNtlm = true;
            client.ClientCredentials.Windows.ClientCredential.Domain = "aDomain";
            client.ClientCredentials.Windows.ClientCredential.UserName = "aName";
            client.ClientCredentials.Windows.ClientCredential.Password = "*********";

            var result = client.PublishFromNWFXml(m, "Request List", "Approval", false);
        }
    }
}

this gist solves the MessageSecurityException "The HTTP request is unauthorized with client authentication scheme 'Ntlm'. The authentication header received from the server was 'Negotiate,NTLM'.".

Thank you very much!!! This gist saved me lots of time!

AllowNtlm = true is deprecated. My solution is to set NTLM in clientCredentialType in app.config