Actually the installation guide has a warning about it: http://docs.jboss.com/jbportal/v2.6/reference-guide/en/html/installation.... anonymous wrote : | Warning | Make sure to download the JBoss AS Zip version. DO NOT ATTEMPT to deploy JBoss Portal on the installer version of JBoss AS! We are currently working on aligning the Application installer with JBoss Portal. | So basically you need to work around. Install JBoss AS using the JEMS installer using the *portal * configuration. It will install 2.4. Now you can update the jbossportal.sar to 2.6 and you should have an environment for Seam *and* portal. That's what you are trying to achieve i think. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4045531#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...