This is an issue with the installation: please double check you don't have jbossws-native-* libs in your AS installation (including lib/endorsed dir). As you say, JBossWS-CXF is not meant to use any org.jboss.ws.core.soap classes, hence the reason for it to search them stands in a wrong service file (coming from a jbossws-native lib) setting that factory. View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4250348#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...