(401) Несанкционированная ошибка: безопасность/привязка WCF

У меня есть веб-сервис WCF и клиент оба на той же машине. Доступ к веб-сервису WCF непосредственно с помощью работ браузера, но клиента не может соединиться; сообщение об ошибке ниже. Какие-либо идеи? Интегрированный Windows Auth в IIS используется для обоих клиентов и серверов.

The remote server returned an error: (401) Unauthorized. 
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. 

Exception Details: System.Net.WebException: The remote server returned an error: (401) Unauthorized.

Source Error: 

An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.  

Stack Trace: 

[WebException: The remote server returned an error: (401) Unauthorized.]
   System.Net.HttpWebRequest.GetResponse() +5313085
   System.ServiceModel.Channels.HttpChannelRequest.WaitForReply(TimeSpan timeout) +54

[MessageSecurityException: The HTTP request is unauthorized with client authentication scheme 'Negotiate'. The authentication header received from the server was 'Negotiate,NTLM'.]
   System.Runtime.Remoting.Proxies.RealProxy.HandleReturnMessage(IMessage reqMsg, IMessage retMsg) +7594687
   System.Runtime.Remoting.Proxies.RealProxy.PrivateInvoke(MessageData& msgData, Int32 type) +275
   HRPaysService.IService1.GetAlert() +0
   HRPaysService.Service1Client.GetAlert() +15
   _Default.Page_Load(Object sender, EventArgs e) +138
   System.Web.Util.CalliHelper.EventArgFunctionCaller(IntPtr fp, Object o, Object t, EventArgs e) +14
   System.Web.Util.CalliEventHandlerDelegateProxy.Callback(Object sender, EventArgs e) +35
   System.Web.UI.Control.OnLoad(EventArgs e) +99
   System.Web.UI.Control.LoadRecursive() +50
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +627

Клиент:

  <system.serviceModel>
     <bindings> 
        <basicHttpBinding> 
           <binding name="basicBinding"> 
              <security mode="TransportCredentialOnly">
                  <transport clientCredentialType="Windows" 
                             proxyCredentialType="Windows" realm="" />
                  <message clientCredentialType="UserName" 
                           algorithmSuite="Default" />
              </security> 
           </binding> 
        </basicHttpBinding> 
     </bindings> 
     <client>
         <endpoint 
             address="http://hrpaysservice/service1.svc" 
             binding="basicHttpBinding"
             bindingConfiguration="basicBinding" 
             contract="HRPaysService.IService1">
         </endpoint>
     </client>
  </system.serviceModel>

Сервер:

<system.serviceModel>
   <bindings> 
      <basicHttpBinding> 
         <binding name="basicBinding"> 
            <security mode="TransportCredentialOnly">
                <transport clientCredentialType="Windows" 
                           proxyCredentialType="Windows" realm="" />
                <message clientCredentialType="UserName" 
                         algorithmSuite="Default" />
            </security> 
         </binding> 
      </basicHttpBinding> 
   </bindings> 
   <client>
       <endpoint 
           address="http://hrpaysservice/service1.svc" 
           binding="basicHttpBinding"
           bindingConfiguration="basicBinding" 
           contract="HRPaysService.IService1">
       </endpoint>
</client>
</system.serviceModel>