Rizwan P [http://community.jboss.org/people/RizwanP] created the discussion "Jboss 4.2.3 IllegalArgumentException for Invoking webservice in JDK1.6" To view the discussion, visit: http://community.jboss.org/message/551031#551031 -------------------------------------------------------------- Hi, I am getting strange error on different jboss instances while invoking the webservice. The configuration for both the server instance is same no change just a duplicate copy of other. Below is the error I am receiving while invoking the webservice call at first time, and after that the working of client is halt. java.lang.ExceptionInInitializerError           at sun.reflect.NativeConstructorAccessorImple.newInstance0(Native Method)           ....           at javax.xml.soap.FactoryFinder.newInstance(FactoryFinder.java:55)           ....           at javax.xml.soap.MessageFactory.newInstance(MessageFactory.java:144)           at com.sun.xml.ws.api.SOAPVersion.<init>(SOAPVersion.java:178)           .... Caused by: java.lang.IllegalArgumentException: com.sun.xml.internal.messaging.saaj.soap.LocalStrings != com.sun.xml.messaging.saaj.soap.LocalStrings           at java.util.logging.Logger.getLogger(Logger.java:314)           at com.sun.xml.messaging.saaj.soap.SAAJMetaFactoryImple.<init>(SAAJMetaFactoryImpl.java:52)   Please provide suggestion how to resolve this problem. saaj-impl.jar version : 1.3 (Present at the server's jbossws.sar directory and nowhere on the instance) JDK : 1.6.013 Jboss : 4.2.3 Jboss Metro : 3.1.1.GA -------------------------------------------------------------- Reply to this message by going to Community [http://community.jboss.org/message/551031#551031] Start a new discussion in JBoss Web Services Metro at Community [http://community.jboss.org/choose-container!input.jspa?contentType=1&...]