Hi, Here's my problem : when I start JBoss AS 5.1 hosting a (very) simple Web application with basic authentication (as described there : http://www.jboss.org/community/wiki/SecureAWebApplicationInJBoss), an exception is thrown at : 00:42:04,935 ERROR [CoyoteAdapter] Une exception ou une erreur s'est produite dans le conteneur durant le traitement de la requ�te | java.lang.IllegalStateException: Authorization Manager is null | at org.jboss.security.plugins.javaee.WebAuthorizationHelper.hasUserDataPermission(WebAuthorizationHelper.java:185) | at org.jboss.web.tomcat.security.JBossWebRealm.hasUserDataPermission(JBossWebRealm.java:643) | at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:461) | at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:92) | at org.jboss.web.tomcat.security.SecurityContextEstablishmentValve.process(SecurityContextEstablishmentValve.java:126) | at org.jboss.web.tomcat.security.SecurityContextEstablishmentValve.invoke(SecurityContextEstablishmentValve.java:70) | at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127) | at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) | at org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:158) | at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) | at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:330) | at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:829) | at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:598) | at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447) | at java.lang.Thread.run(Thread.java:619) | Have been looking for this exception on the web for hours and got nothing... Thank very much for any help. Dego64 View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4259256#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...