Hi, Benoit This problem occurs because it is running two JMX. One of jBOSS and one's own JVM. In my case I decided disabling the parameter-Dcom.sun.management.jmxremote. This parameter is for the JVM using JMX the SUN and not the JBOSS. []´s Claudemir -----Original Message----- From: jboss-user-bounces(a)lists.jboss.org [mailto:jboss-user-bounces@lists.jboss.org] On Behalf Of benoitx Sent: segunda-feira, 28 de janeiro de 2008 13:51 To: jboss-user(a)lists.jboss.org Subject: [jboss-user] [Security & JAAS/JBoss] - Re:InstanceNotFoundException in jboss.security:service=Jaas Hi Claudemir, I have exactly the same issue http://jboss.org/index.html?module=bb&op=viewtopic&t=128691 Have you found a solution to your issue? Thanks a lot Benoit[/url] View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4124103#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a... _______________________________________________ jboss-user mailing list jboss-user(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/jboss-user No virus found in this incoming message. Checked by AVG Free Edition. Version: 7.5.516 / Virus Database: 269.19.13/1246 - Release Date: 27/1/2008 18:39 No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.5.516 / Virus Database: 269.19.20/1262 - Release Date: 6/2/2008 09:13