To solve the no application.xml file problem, you must create an application.xml file which lists the modules that are being published in the ear. An example is below: <?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'> <display-name>Enterprise Application</display-name> EnterpriseBean.jar <web-uri>WebApp.war</web-uri> <context-root>web</context-root> I encourage you to look up jee EAR structures. You will most likely read that in jee 5.0 the application.xml is not needed, but jboss 4.2 is NOT jee5 certified and still requires the file. This is my current understanding of the situation. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4162622#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...