The remote server returned an unexpected response: (413) Request Entity Too Large.

For the record

I think I got it. The Web.Config from the service does not have the binding information. I placed this info in it, and voila!

<bindings>
      <basicHttpBinding>
        <binding maxBufferPoolSize="2147483647" maxBufferSize="2147483647" maxReceivedMessageSize="2147483647" messageEncoding="Text">
          <readerQuotas maxDepth="2000000" maxStringContentLength="2147483647" maxArrayLength="2147483647" maxBytesPerRead="2147483647" maxNameTableCharCount="2147483647" />
        </binding>
      </basicHttpBinding>
</bindings>

Note here that the binding did not have a name specified.

You don't have an explicit endpoint (meaning one defined in your config file) for your service, so the binding configuration you declared ("BasicHttpBinding_IService") isn't being used. WCF is providing a default endpoint along with a default binding (basicHttpBinding unless you overrode it in the protocolMapping section of the config file).

You have two ways to resolve this in your service's config file:

You can make the "BasicHttpBinding_IService" configuration the default by removing the name attribute:

<binding maxBufferPoolSize="2147483647".....

Or you define an endpoint explicitly in the config and assign your binding configuration to the bindingConfiguration attribute of the endpoint.

<services>
    <endpoint address="" 
              binding="basicHttpBinding"
              bindingConfiguration="BasicHttpBinding_IService"     
              contract="ServiceReference1.IService"  />
</services>