Did you mean JBoss AS 4.2.0? If so, yes, you can run JBossWS 1.2 with JBoss AS 4.2.0. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4028398#4028398 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4028398