I just found that I need to add additional jar files and a rule file. So I added the jar files and an empty rule file. After that, I got the following exception instead: ... Caused by: java.lang.NullPointerException at org.jboss.seam.security.Identity.postAuthenticate(Identity.java:362) at org.jboss.seam.security.Identity.authenticate(Identity.java:196) at org.jboss.seam.security.Identity.authenticate(Identity.java:189) .... View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4010678#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...