调用WCF出现 The remote server returned an error: (401) Unauthorized. 错误

解决方案：

将配置文件中：

 <security mode="None">
            <transport clientCredentialType="None" proxyCredentialType="None"
              realm="" />
            <message clientCredentialType="UserName" algorithmSuite="Default" />
 </security>

更改为：

 <security mode="TransportCredentialOnly">
            <transport clientCredentialType="Windows" proxyCredentialType="Windows"
              realm="" />
            <message clientCredentialType="UserName" algorithmSuite="Default" />
 </security>