I don't think Seam on Jetty is supported yet as the Embeddable JBoss is specifically built for Tomcat. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4093822#4093822 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4093822