i am using ad provider 1.0.04

there is problem when a user login through ad on application , i am creating a session for login users (login throuhg a link not automatic because some requiremnts) when user logoff from page and close the browser, working fine.

But when user close browser (application) without logoff (logout), and next time he open application he automatic login on applicaion through ad but there is no session exist.

i want when user close browser without logoff and next time he open browser (app) he can't login automaticaly on app.

i find a cookie on my system when i delete this cookie, user can't login automatically otherwise he login.

i know if i expire cookie on my system on browser(app) close (Session_End evnet handler in Global.asax) , my problem is solve , but Session_End event handler did not call,

please solve my problem

Thanks