I am not sure which version of jboss you are using. Currently, we use JBoss-3.2.3 and we have a similar case where there are jar files in our ear file and the way we configure it is as follows: - Create a application.xml file containing the following: <?xml version="1.0" encoding="UTF-8"?> | <!DOCTYPE application PUBLIC "-//Sun Microsystems, Inc.//DTD J2EE Application 1.3//EN" "http://java.sun.com/dtd/application_1_3.dtd"> | <application> | | <display-name>My Struts Example</display-name> | | <module> | <java>first.jar</java> <!-- Assuming that first.jar is *directly* under the ear --> | </module> | | <module> | <java>second.jar</java> | </module> | | </application> - Place this application.xml file in the META-INF directory of yourApp.ear This works for us without any issues. See if this approach suits you. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3957634#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...