I am maintaining a large project that uses a lot of WCF services and when certain users log in to the site they get this error
The content type text/html; charset=utf-8 of the response message does not match the content type of the binding (application/soap+xml; charset=utf-8). If using a custom encoder, be sure that the IsContentTypeSupported method is implemented properly. The first 1024 bytes of the response were: ' '.
I don't know what the cause of this could be, nor where to look to fix it. Any ideas?