Hi Bryan, I think the problem here is due to an issue in the installation of JBossWS-CXF. You should not have anything pointing to "org.jboss.ws.core.soap.MessageFactoryImpl" which is a Native stack class and thus is not (and MUST not) be available when running with the CXF stack. IOW, you probably have jbossws-native-saaj.jar (or a previous version of that artifact) in your classpath and that contains a javax.xml.soap.MessageFactory file pointing to the native implementation of that message factory. You need to remove that jar from your classpath/installation. That should have been done by the installation process, so there's either a problem with that or you did something wrong. Please check this and update/resolve/close the JBWS-2557 issue. Btw the CXF stack should use the com/sun/xml/messaging/saaj/soap/MessageFactoryImpl.class when no specific MessageFactory is specified through the service mechanism. Thanks View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4213278#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...