my test web.config




<system.serviceModel>
    <bindings>
      <webHttpBinding>
        <binding name="default">
          <security mode="TransportCredentialOnly">
            <transport clientCredentialType="Ntlm"/>
          </security>
        </binding>
      </webHttpBinding>
    </bindings>

    <behaviors>
      <endpointBehaviors>
        <behavior name="JsonBehavior">
          <webHttp/>
        </behavior>
      </endpointBehaviors>

      <serviceBehaviors>
        <behavior name="LiveTime.Services.TimeReportServiceBehavior">
          <serviceMetadata httpGetEnabled="true" />
          <serviceDebug includeExceptionDetailInFaults="false" />
        </behavior>
      </serviceBehaviors>
    </behaviors>

    <services>
      <service behaviorConfiguration="LiveTime.Services.TimeReportServiceBehavior"
               name="LiveTime.Services.TimeReportService">
        <endpoint address="" binding="webHttpBinding" bindingConfiguration="default"
                  behaviorConfiguration="JsonBehavior" contract="LiveTime.Services.ITimeReportService" >
        </endpoint>
      </service>
    </services>

    <!-- aspNetCompatibilityEnabled should be off, or services wont be able to work concurrently (they will be locked on session)
         which leads to noticable perfomance reduction -->
    <serviceHostingEnvironment aspNetCompatibilityEnabled="false"/>
  </system.serviceModel>