Hey, Take a careful look at you ejb jar file,u'l notice that your bean and its interfaces are sitting under the META-INF directory, and in your ejb-jar.xml file u told jboss that your bean interface is in the following package "tutorial.ejb", when Jboss goes in that package the interface is not there.Make sure that you move those classes into the root of the ejb**.jar file under the directory structure "tutorial.ejb" not under META-INF. It should be able to locate the bean and its interfaces.Hence ClassNotFound View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3965633#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...