"bstansberry(a)jboss.com" wrote : If region-based marshalling isn't used, the | classloader JBC uses to deserialize messages is the one that loaded JBC itself. | In the above cases, this classloader is a parent to the application's | classloader, and thus can't see classes loaded by the parent | classloader. I guess you really mean that the parent classloader can't see classes loader by the child classloader? i.e. when classes deployed on war or configured with loader repository. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3989874#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...