HTTP request is unauthorized with client authentication scheme 'Anonymous'. The authentication header received from the server was 'NTLM'。

情况：WCF服务在浏览器中可以正常浏览，但是通过程序调用提示：

HTTP request is unauthorized with client authentication scheme 'Anonymous'. The authentication header received from the server was 'NTLM'。

详细错误信息：

System.ServiceModel.Security.MessageSecurityException: The HTTP request is unauthorized with client authentication scheme 'Anonymous'. The authentication header received from the server was 'Negotiate,NTLM'. ---> System.Net.WebException: The remote server returned an error: () Unauthorized.
   at System.Net.HttpWebRequest.GetResponse()
   at System.ServiceModel.Channels.HttpChannelFactory.HttpRequestChannel.HttpChannelRequest.WaitForReply(TimeSpan timeout)

解决方法（以匿名访问）：

1.检查当前服务的身份验证模式是否和WCF在config中配置的模式是否一致。例如：

<binding name="BasicHttpBinding_Service" closeTimeout="00:00:30"
            openTimeout="00:01:00" receiveTimeout="00:10:00" sendTimeout="00:10:00"
            bypassProxyOnLocal="false"  hostNameComparisonMode="StrongWildcard"
            maxBufferPoolSize="2147483647" maxReceivedMessageSize="2147483647"
           useDefaultWebProxy="true"  messageEncoding="Text" textEncoding="utf-8" transferMode="Buffered"
            allowCookies="false">
          <readerQuotas maxDepth="32" maxStringContentLength="2147483647"
              maxArrayLength="2147483647" maxBytesPerRead="2147483647" maxNameTableCharCount="2147483647" />
          <security mode="None">
            <transport clientCredentialType="None" />
            <message clientCredentialType="UserName"/>
          </security>
        </binding>

加密模式为None。那么就应该检查是IIS中该服务身份验证模式否开启了【匿名访问】。

2.确认【我的电脑】-右键-【管理】-【本地用户和组】-【用户】中是否存在IIS中匿名访问所设置的用户。

XP：默认为用户名称。默认用户名格式：IUSER_计算机名。如果没有该计算机名称，那么需要添加该用户。确保该用户未被禁用。

Win7：默认为用户类型。默认的用户类型为：IUSER

以上为我的实际解决方法。

以下为网上提供的其他 的解决方法：

HTTP request is unauthorized with client authentication scheme 'Anonymous'.

当使用VS2008 作为client call sharepoint的service（WCF）的时候显示异常：

HTTP request is unauthorized with client authentication scheme 'Anonymous'. The authentication header received from the server was 'NTLM'。

我的解决方法：

1，使用http的endpoint：

<security mode="TransportCredentialOnly">

2，使用https的endpoint：

<security mode="Transport">

粘贴出client端的app.config

代码

<?xml version="1.0" encoding="utf-8"?>
<configuration>
  <system.serviceModel>
    <bindings>
      <basicHttpBinding>
        <binding name="BasicHttpBinding_BusinessDataCatalogSharedService"
            closeTimeout="00:01:00" openTimeout="00:01:00" receiveTimeout="00:10:00"
            sendTimeout="00:01:00" allowCookies="false" bypassProxyOnLocal="false"
            hostNameComparisonMode="StrongWildcard" maxBufferSize="999999"
            maxBufferPoolSize="9999999" maxReceivedMessageSize="999999"
            messageEncoding="Mtom" textEncoding="utf-8" transferMode="Buffered"
            useDefaultWebProxy="true">
          <readerQuotas maxDepth="99" maxStringContentLength="999999" maxArrayLength="999999"
              maxBytesPerRead="999999" maxNameTableCharCount="999999" />
          <security mode="TransportCredentialOnly">
            <transport clientCredentialType="Ntlm" proxyCredentialType="None"
                realm="">
              <extendedProtectionPolicy policyEnforcement="Never" />
            </transport>
            <message clientCredentialType="UserName" algorithmSuite="Default" />
          </security>
        </binding>
        <binding name="BasicHttpBinding_BusinessDataCatalogSharedService1"
            closeTimeout="00:01:00" openTimeout="00:01:00" receiveTimeout="00:10:00"
            sendTimeout="00:01:00" allowCookies="false" bypassProxyOnLocal="false"
            hostNameComparisonMode="StrongWildcard" maxBufferSize="999999"
            maxBufferPoolSize="9999999" maxReceivedMessageSize="999999"
            messageEncoding="Mtom" textEncoding="utf-8" transferMode="Buffered"
            useDefaultWebProxy="true">
          <readerQuotas maxDepth="99" maxStringContentLength="999999" maxArrayLength="999999"
              maxBytesPerRead="999999" maxNameTableCharCount="999999" />
          <security mode="Transport">
            <transport clientCredentialType="Ntlm" proxyCredentialType="None"
                realm="">
              <!--<extendedProtectionPolicy policyEnforcement="Never" />-->
            </transport>
            <message clientCredentialType="UserName" algorithmSuite="Default" />
          </security>
        </binding>
      </basicHttpBinding>
    </bindings>
    <client>
      <endpoint address="http://SUT02/_vti_bin/BdcAdminService.svc"
          binding="basicHttpBinding" bindingConfiguration="BasicHttpBinding_BusinessDataCatalogSharedService"
          contract="BusinessDataCatalogSharedService" name="BasicHttpBinding_BusinessDataCatalogSharedService" />
      <endpoint address="https://SUT02:443/_vti_bin/BdcAdminService.svc"
          binding="basicHttpBinding" bindingConfiguration="BasicHttpBinding_BusinessDataCatalogSharedService1"
          contract="BusinessDataCatalogSharedService" name="BasicHttpBinding_BusinessDataCatalogSharedService1" />
    </client>
  </system.serviceModel>
</configuration>

client端的代码如下：

代码

static void Main(string[] args)
        {
            BusinessDataCatalogSharedServiceClient client = new BusinessDataCatalogSharedServiceClient("BasicHttpBinding_BusinessDataCatalogSharedService1");
            client.ClientCredentials.Windows.AllowedImpersonationLevel = System.Security.Principal.TokenImpersonationLevel.Impersonation;
            client.ClientCredentials.UserName.UserName = @"domain\userName";
            client.ClientCredentials.UserName.Password = "Password";
            client.ClientCredentials.Windows.ClientCredential = new NetworkCredential("username", "Password", "domain");
            AcceptAllCertificate();
            try
            {
                Guid guid = client.GetServiceApplicationId();
            }
            catch (Exception ex)
            {
                throw;
            }

        }

        /// <summary>
        /// Case request Url include HTTPS and TCP prefix, use this function to avoid closing base connection.
        /// Local client will accept all certificate after execute this function.
        /// </summary>
        public static void AcceptAllCertificate()
        {
            ServicePointManager.ServerCertificateValidationCallback = new RemoteCertificateValidationCallback(ValidateServerCertificate);
        }
        /// <summary>
        /// Verifies the remote Secure Sockets Layer (SSL) certificate used for authentication.
        /// In our adapter,we make this method always return true, make client can communicate with server under HTTPS without a certification.
        /// </summary>
        /// <param name="sender">An object that contains state information for this validation.</param>
        /// <param name="certificate">The certificate used to authenticate the remote party.</param>
        /// <param name="chain">The chain of certificate authorities associated with the remote certificate.</param>
        /// <param name="sslPolicyErrors">One or more errors associated with the remote certificate.</param>
        /// <returns>A Boolean value that determines whether the specified certificate is accepted for authentication.</returns>
        private static bool ValidateServerCertificate(object sender, X509Certificate certificate, X509Chain chain, SslPolicyErrors sslPolicyErrors)
        {
            return true;
        }

The HTTP request is unauthorized with client authentication scheme 'Anonymous'. The authentication header received from the serv

The HTTP request is unauthorized with client authentication scheme 'Anonymous'. The authentication header received from the server was 'Negotiate,NTLM'.

解决方案

1 配置IIS

网站->属性->目录安全性->身份验证方法: 同时选中”匿名访问”和”集成Windows身份验证”

2 配置WCF客户端的Config文件: 有3处地方: 1)security mode, 2)end point的behaviorConfiguration, 3)behaviors

<system.serviceModel>
    <bindings>
        <basicHttpBinding>
            <binding …>

                <readerQuotas … />
                <security mode="TransportCredentialOnly">
                    <transport clientCredentialType="Windows" proxyCredentialType="Windows" realm="" />
                    <message clientCredentialType="UserName" algorithmSuite="Default" />
                </security>
            </binding>
        </basicHttpBinding>
    </bindings>

    <client>
        <endpoint ... behaviorConfiguration="ImpersonationBehavior"/>
    </client>

    <behaviors>
        <endpointBehaviors>
            <behavior name="ImpersonationBehavior">
                <clientCredentials>
                    <windows allowedImpersonationLevel="Impersonation"/>
                </clientCredentials>
            </behavior>
        </endpointBehaviors>
    </behaviors>

</system.serviceModel>