"Quick fix" for when you can't login to your site In /includes/pnSession.php, change this line : if (pnConfigGetVar('intranet') == false) { to if (pnConfigGetVar('intranet') == true) { As an alternative, comment out the following lines in the same file : // ini_set('session.cookie_domain',$domain); and // ini_set('session.referer_check',$domain); For more tips and tricks, see Mike's Pub