another way is to force the window state programmaticaly with setWindowState(WindowState.MAXIMIZED) on ActionResponse View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4051981#4051981 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4051981