How is your EJB packaged? Is it in a .ear file? If yes then move the jar, which you have placed in deploy directory, into you ear and add an entry to application.xml as follows: | <module> | <java>myjarName.jar</java> | </module> The other alternative would be to place your jar into the %JBOSS_HOME%/server/default/lib directory instead of the deploy directory. However this considered as a bad practice and not recommended, though its going to work. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3969025#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...