Hi, you are my big hope ;-). I built some WS with cxf and tried to run they with JBOSS 4.2.3. When th ws try to get a connection follow exception will throwed: "java.lang.ClassCastException: org.apache.cxf.jaxws.ServiceImpl cannot be cast to javax.xml.ws.spi.ServiceDelegate21" Any Ideas? PS: CXF knows javax.xml.ws.spi.ServiceDelegate an no ServiceDelegate21 Thanks! View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4173030#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...