Sascha Janz [https://community.jboss.org/people/AJanz] created the discussion "ClassCastException: com.sun.xml.bind.v2.runtime.JAXBContextImpl" To view the discussion, visit: https://community.jboss.org/message/717651#717651 -------------------------------------------------------------- we are using jboss 4.2.3 one of our applications got following classcastexception Caused by: java.lang.ClassCastException: com.sun.xml.bind.v2.runtime.JAXBContextImpl cannot be cast to com.sun.xml.internal.bind.api.JAXBRIContext at com.sun.xml.internal.ws.fault.SOAPFaultBuilder.(Unknown Source) ... 115 more   i tried jdk 1.6.04 and jdk7u2  any tips what to check? -------------------------------------------------------------- Reply to this message by going to Community [https://community.jboss.org/message/717651#717651] Start a new discussion in JBoss Web Services at Community [https://community.jboss.org/choose-container!input.jspa?contentType=1&...]