i solved, sorry my mistake. i was exporting in my portlet war some libraries that generated conflicts with the portal ones View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4134631#4134631 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4134631