Error may be one of the reasons Error - Session Invalid You have used Back/Forward/Refresh button of your Browser. You have clicked twice on any options/buttons. You have kept the browser window idle for a long time. You have logged in from another browser window. You are accessing the application URL from a saved or static page. If the problem persists, please clear the temporary files from your browser and try again; or click here to contact us. Please click here to log in and continue CRA System.