Ave, I¹m trying to run this very simple HTTP user authentication script: <?php if (!isset($_SERVER['PHP_AUTH_USER'])) { header('WWW-Authenticate: Basic realm="Private"'); header('HTTP/1.0 401 Unauthorized'); echo 'Unauthorized'; exit; } else { if(($_SERVER['PHP_AUTH_USER']=="try") && ($_SERVER['PHP_AUTH_PW']=="try")) { ?> <HTML> <HEAD></HEAD> <BODY> My Stuff Goes Here! </BODY> </HTML> <? } else { echo "Access Denied"; } } ?> The problem is, this script runs perfectly fine on my localhost machine at home, however it¹s not working on my web server (purchased webhosting). When I open this page on my web site, it does bring up the popup box asking for Username & Password the problem is, even if I type the correct user/pass, it won¹t accept it. It keeps asking me for user/pass again and again and finally brings up the ³Unauthorized² text on the page. Why won¹t it allow the correct user/pass to login? I don¹t understand. The only difference between the PHP on my localhost and the PHP on my webhost server is that my local machine is running PHP 5 and the webhost server is running PHP 4.4.1 Thanks, Rahul S. Johari Coordinator, Internet & Administration Informed Marketing Services Inc. 251 River Street Troy, NY 12180 Tel: (518) 266-0909 x154 Fax: (518) 266-0909 Email: rahul@xxxxxxxxxxxxxxxxxxxx http://www.informed-sources.com