Matt Connew

The default security mode for NetTcpBinding is Transport, and the default client credential type is Windows. This means it uses NegotiateStream to authenticate. This won't work without some library installation...

Using Certificate credential type means it will use certificates with SslStream instead. The call stack above is most likely caused by the client and the server being configured with different...

@hurrk, on a .NET Framework application, can you try using "Add **Service Reference**" and see if you get the same error on .NET Framework? The problem is that your service...

@mottykohn, I had a quick look at your wsdl and it does specify use of message headers. I've included a snippet of your WSDL here to show an example of...

@mottykohn, I took a closer look at the code and it's not quite clear exactly what the change should be. The reason is the existing code [here](https://github.com/dotnet/wcf/blob/master/src/System.Private.ServiceModel/src/System/ServiceModel/Description/XmlSerializerOperationBehavior.cs#L654) where it throws...

@mottykohn, neither of those has a header parameter being shown. I took a deeper look at your wsdl and there's interesting where it looks like the Web Services generated client...

I have some kind of good news for you. I have this working in my local dev branch. There's some issues with the WCF Connected Services tool where it's generating...

I've got a change in PR to allow using MessageHeader attribute. This should close some of the gap in functionality between the client created by "Add Web Reference" (for older...

@jbermudezcabrera are you using the latest package version? If you are and are still getting the same exception message, can you provide the exception call stack? I'm not aware of...

I just double checked, and this is due to using an older version of the WCF nuget packages. Make sure you are using the latest version, which is currently 4.8.1...