I have created a service in JBoss.NET and a Java client works fine with Basic Auth. However an MS Client fails. After searching all groups etc. I read something that MS .NET must receive an HTTP 401 auth failed, first and then on all calls after that it will include the authentication. Problem is that JBoss.NET fails with a HTTP 500. Does anyone know how to make this work with jboss.net. Is there something to set in the web-service.xml. I read through all the testsuite tests etc.