1. You have used Back/Forward/Refresh button of your Browser. 2. You have clicked twice on any options/buttons. 3. You have kept the browser window idle for a long time. 4. You have logged in from another browser window. 5. You are accessing the application URL from a saved or static page. 6. If the problem persists, please clear the temporary files from your browser and try again. 7. Please click on below mentioned tabs to continue.