Fresh news!!! I made the thing work with an application running on JBoss 4.0 . It's another client application. So the problem isn't from the JBoss server itself, it's from my client application. Now i have to find WHY my client application can't invoke the service. (still the same exception). My help request is still open :p View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4132890#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...