Fatal error: Class 'PDO' not found on a Windows Server

JackDeth

I'm hosting on a Windows Advanced Web Server using PHP 5.2.x. It has the extension=php_pdo_mysql.dll and extension=php_pdo.dll extensions in the ext directory and they are loading in the php.ini file.

However, when trying to run this for the first time I still get the following error:

Fatal error: Class 'PDO' not found in C:\Inetpub\wwwroot\localuser\XXXXXXXX\mywebsite.org\vanilla\conf\config-defaults.php on line 16

Linc

In a phpinfo() page, look for "PDO Support" and confirm that MySQL is in the enabled column. Being in the config doesn't mean it's actually on.