note 106009 added to function.session-start

I think I have a problem with session_start ();.. I can not find the error .. on my pc (with wamp) everything is more than good. Now that the Web page is in the air .. I have problems with multiple pages .. My web page is divided into ADM and Users, the session_start (); at ADM pages works well, now I can not do the same in the pages of the users, the session_start (); not recognize the user. -now the session_start (); is the first line on every page. - The code is the same as exactamen I have on my pc (wamp) is there any settings I have to do in my DB? if someone can guide me to find the problem would be very grateful Alan ---- Server IP: 69.147.83.197 Probable Submitter: 84.228.86.80 ---- Manual Page -- http://www.php.net/manual/en/function.session-start.php Edit -- https://master.php.net/note/edit/106009 Del: integrated -- https://master.php.net/note/delete/106009/integrated Del: useless -- https://master.php.net/note/delete/106009/useless Del: bad code -- https://master.php.net/note/delete/106009/bad+code Del: spam -- https://master.php.net/note/delete/106009/spam Del: non-english -- https://master.php.net/note/delete/106009/non-english Del: in docs -- https://master.php.net/note/delete/106009/in+docs Del: other reasons-- https://master.php.net/note/delete/106009 Reject -- https://master.php.net/note/reject/106009 Search -- https://master.php.net/manage/user-notes.php