Updated instructions are: Copy the following jars to ${JBOSS_HOME}/lib/endorsed from JBossWS-Dist/lib (since 3.0.2 version): jaxb-api.jar jbossws-native-jaxrpc.jar jbossws-native-jaxws.jar jbossws-native-jaxws-ext.jar jbossws-native-saaj.jar We're successfully testing JBossWS against JDK6 on regular basis. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4175757#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...