I got this error before. It was either because I did not make the META-INF/standard-jaxws-client-config.xml, or I did not remove the configurations other than Standard WSSecurity Client from that file, or because I did not reference the truststores in either the jboss-wsse-clsient.xml or jboss-wsse-server.xml files. (It's been several days and several millions errors since that happened, but if the above suggestions don't solve the problem let me know and I will see if I can reproduce it.) View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4032600#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...