IErrorHandler returning wrong message body when HTTP status code is 401 Unauthorized

Question

I have implemented IErrorHandler to handle authorization exceptions thrown within the constructor of my restful WCF service. When a general exception is caught my custom typ

Answer 1

I am not quite sure how your application is implemented. Based on your description, I suggest using visual studio to debug your ErrorHandler to see whether the exception arrive your callback.

If yes, manually construct your soap fault or response in the way you want.

If not, it means the exception happens before arriving your service operation, it may fail already in Channel stack, in this case, an easy approach is add extra HttpModule to custom or map the response. Or you can try custom the encoder in Channel stack.