Are you using any Persistence Managers a.k.a ejb 3 ? Check this out. anonymous wrote : at java.lang.Thread.run(Thread.java:595) | 19:34:44,848 WARN [ServiceController] Problem starting service jboss.messaging:service=PersistenceManager | java.lang.SecurityException: Invalid authentication attempt, principal=null It appears that some timer service/messaging is using Persistence Service which may be secured ... View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4202988#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...