出現本錯誤提示的可能有多種，大部分是因為maxBufferSize值沒有設定，或者設定過小，再就是安全級別的問題，nettcpbinding會預設使用傳輸安全，而wshttpbinding會使用訊息安全。當你部署出去以後，這個錯誤也會導致你客戶端身份的變化，而無法例項化通道。

<system.serviceModel>
        <bindings>
            <basicHttpBinding>
              <binding name="BasicHttpBinding_ICumService" maxBufferSize="666666666" receiveTimeout="00:03:00" closeTimeout="00:03:00" sendTimeout="00:01:00" messageEncoding="Text" maxReceivedMessageSize="666666666">
                <security mode="None">
                  <transport clientCredentialType="Windows"></transport>
                  <message clientCredentialType="Certificate"/>
                </security>
              </binding>
            </basicHttpBinding>
        </bindings>
        <client>
            <endpoint address="http://cumwcf.yw82.com/CumService.svc" binding="basicHttpBinding"
                bindingConfiguration="BasicHttpBinding_ICumService" contract="MyCumService.ICumService"
                name="BasicHttpBinding_ICumService" />
        </client>
    </system.serviceModel>
 

安全性的問題只要在binding中加

<security mode="None">
                  <transport clientCredentialType="Windows"></transport>
                  <message clientCredentialType="Certificate"/>
                </security>