I'm having the exact same problem, and have not found jta.jar anywhere. I noticed in the web-console that under J2EE Resources, there is an entity called TransactionManager, but i can view no properties on it. Should i be able to? In general, does anyone have a good idea how to solve the problem here: JTA TransactionManager is not available at JNDI location [java:/TransactionManager]; nested exception is javax.naming.NamingException: Object [org.jboss.tm.TxManager@ffce21] available at JNDI location [java:/TransactionManager] does not implement [javax.transaction.TransactionManager] View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4057787#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...