"Elhanan" wrote : | after placing jboss-app.xml in the meta-inf of the ear... | ... | the mdb extends an abstract class which implements MessageListener, MessageDrivenBean | ... | Looks like an old issue: http://www.jboss.org/index.html?module=bb&op=viewtopic&t=58037&am.... But i could not locate any open JIRA for this, so not sure whether it's still an issue or has been fixed. Try this, instead of the Abstract class implementing the MessageDrivenBean and MessageListener, let the MDB class implement those 2 interfaces and extend from the abstract bean. See if that helps. And by the way, are you packaging any jar file(s) containing javax.jms.* or javax.ejb.* classes? If yes, remove those jar files from your application packaging and see if that solves the problem. View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4249553#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...