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c#wcfduplexwsdualhttpbinding

WSDualHttpBinding wont work on some computers

I have an wcf that uses an wsdusalhttpbinding

WSDualHttpBinding binding = new WSDualHttpBinding();
binding.MaxBufferPoolSize = int.MaxValue;
binding.MaxReceivedMessageSize = int.MaxValue;
binding.Security.Mode = WSDualHttpSecurityMode.None;
binding.Security.Message.ClientCredentialType = MessageCredentialType.None;

_host.AddServiceEndpoint(typeof(IService), binding, baseAddress + "/ws");

//Mex
ServiceMetadataBehavior smb = new ServiceMetadataBehavior();
smb.HttpGetEnabled = true;
_host.Description.Behaviors.Add(smb);

_host.Open();

Now this works on my computer and one of my colleagues but on some computers we get this error.

enter image description here

The stacktrace leads to this line.

_host.Open();

I dont understand why it would say WebHttpBinding the only endpoint I use for this service is the one I create with the code I wrote.

Solution

  • It seems i found the problem!

    .net 4.0 on the faulted computers had the os "Windows embedded" or POS ready OS. there must be something missing in the OS of those computers because i installed .NET 4.5 even though my project only requires 4.0. and now it works.

    I have no idea what the error message means but its maybe som wrong pointer or something.