Did you set the JAVA_HOME Are you sure that you have installed the JDK and not the JRE? How do you start JBOSS? View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4183835#4183835 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4183835