look like the exception is from the transaction ; andif i'm correct, findUserByUserName return null when user not found. On my own code i use bean instead and throw the exception by myself : | .... | MBeanServer mbeanServer = MBeanServerLocator.locateJBoss(); | UserModule userModule = (UserModule) MBeanProxy.get(UserModule.class, new ObjectName("portal:service=Module,type=User"), mbeanServer); | User user = userModule.findUserByUserName(userEvent.getUserId()); | | if (user == null) { | throw new IdentityException(); | } | ... | btw, I have to put my code inside a valid session/transaction, even I only doing read only transaction (!?) View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4139927#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...