I am trying to use a custom Princpal class with my custom JAAS LoginModule. I am doing programmatic authentication and thus using Jboss' WebAuthentication class. My LoginModule extends AbstractServerLoginModule. When declaring my login module within login-config.xml I added <module-option name="principalClassName"> and referenced my custom login module. When I try to cast to my custom type I get a classcastexception. If anyone knows what I may be doing wrong, please advice. I would greatly appreciate it. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4184963#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...