You may start another session by clicking Login
a)You have kept the browser window idle for a long time.
b)You have used Back/Forward/Refresh button of your Browser.
c)Multiple clicks on an option or button.
d)Login from multiple browser windows at the same time.
e)You are accessing the application URL from a saved or static page.
f)You are accessing "Microsoft Internet Explorer" Browser in below version than version 9.0 (Use IE version 11.0 and higher)