Thank you , i downloaded saaj-impl.jar put it in jboss\client folder and i could sess my client running well View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4179820#4179820 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4179820