Content Type application/soap+xml; charset=utf-8 was not supported by service

Question

I am getting the error below while trying to add WCF service to WCFTestClient. I went through a number of solutions on the web but I couldn\'t get it to work.

Can

Answer 1

My problem was our own collection class, which was flagged with [DataContract]. From my point of view, this was a clean approach and it worked fine with XmlSerializer but for the WCF endpoint it was breaking and we had to remove it. XmlSerializer still works without.

Not working

[DataContract]
public class AttributeCollection : List>

Working

public class AttributeCollection : List>