Confirmed it is a php installation bug. Just found the step by step guide for Solving this problem. You can get the solution in http://d0--0b.blogspot.com/2009/02/cannot-install-php-528-to-xp-iis-5.html Hope this help :) -- View this message in context: http://www.nabble.com/Installation-of-php-5.2.8-win32-installer.msi-tp21698463p21776117.html Sent from the PHP - General mailing list archive at Nabble.com. -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php