C# 如何解决；未担保或担保不正确的故障”；wcf通信中的异常？

我尝试在windows service任意计算机中通过wcf服务使用远程dll。但wcf服务返回此错误：

通信异常：从另一方接收到不安全或安全性不正确的故障。有关故障代码和详细信息，请参见内部故障异常。

我的wcf服务运行良好。我还调用了我的wcf服务，调用了PROCESS.dll。我正在动态调用wcf服务：

  public static ApplicationHostServiceClient CreateApplicationHostService()
        {
            try
            {
                int maxDifference = 300;
                WSHttpBinding binding = new WSHttpBinding();
                binding.MaxReceivedMessageSize = int.MaxValue;
                binding.MaxBufferPoolSize = int.MaxValue;
                binding.ReaderQuotas.MaxArrayLength = int.MaxValue;
                CustomBinding myCustomBinding = new CustomBinding(binding); //CreateMultiFactorAuthenticationBinding(binding);

                // Set the maxClockSkew
                var security = myCustomBinding.Elements.Find();
                security.LocalClientSettings.MaxClockSkew = TimeSpan.FromMinutes(maxDifference);
                security.LocalServiceSettings.MaxClockSkew = TimeSpan.FromMinutes(maxDifference);

                // Set the maxClockSkew
                var secureTokenParams = (SecureConversationSecurityTokenParameters)security.ProtectionTokenParameters;
                var bootstrap = secureTokenParams.BootstrapSecurityBindingElement;
                bootstrap.LocalClientSettings.MaxClockSkew = TimeSpan.FromMinutes(maxDifference);
                bootstrap.LocalServiceSettings.MaxClockSkew = TimeSpan.FromMinutes(maxDifference);

                // Update the binding of the endpoint
               // service.Description.Endpoints[0].Binding = myCustomBinding;




                EndpointAddress endpoint = new EndpointAddress(new Uri(ProcessApplication.Serverparameters.BaseServiceHost + "/Service/ApplicationHostService.svc"));
                ApplicationHostServiceClient ser = new ApplicationHostServiceClient(myCustomBinding, endpoint);

                return ser;
            }
            catch (Exception exc)
            {

                ProcessApplication.Application.OnError("CreateApplicationHostService is not              succeeded.", "CreateApplicationHostService", exc);
                return null;
            }

        }

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但出现了上述错误。如何解决我的安全异常？

maxDifference的值是多少？能否尝试低于10的maxDifference？在客户端和服务器上都启用wcf跟踪以查看更多信息