Take the scenario, I have created a portlet DemoPortlet with instance name DemoPortletInstance. Now I decided to undeploy the DemoPortlet.war file and Again I created one more Portlet with name TestPortlet and here I created the Instance name as DemoPortletInstance. Which is same as above portlet which I already undeployed. Now what is there on the admin screen. Portlet definition is created correctly but Portlet Instance is not displayed under Portlet Instances tab under Admin tab. Now If I try to create the instance name DemoPortletInstance manually then it is not creating that instance and in logs it says that instance already exists. But I cann't use that instance in the application. Please let me know if anyone has faced the same problem and got any solution for the same I am using jboss-portal-2.7.0. I tested this problem on Windows and Linux OS. Thanks, Vijay View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4244107#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...