You probably deploying it into default configuration or custom configuration that based on default and does not have clustering support. Remove <distributable/> tag from your web.xml. You probably used some version of JBossIDE to create this descriptor, and if I remember correctly it did it by default. OR: Deploy your application into the allconfiguration Regards View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3960866#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...