It looks to me like the ajax4jsf namespace isn't being resolved correctly. Does it work as a h:commandButton? View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4055709#4055709 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4055709