Hi, I could cluster the servers. But, getting "session expiration message" May I know which version of Jboss is being used? If it is 4.2.2.GA version, let me know where you have configured session replication using the replication-config element in the jboss-web.xml(I mean which jboss-web.xml in the "all" configuration mode). View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4146434#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...