When your support pack has expired, you won’t be able to create new tickets anymore. Include the file authenticate.php in every PHP page you want to add authentication to. The .htaccess is a distributed configuration file, and is how Apache handles configuration changes on a per-directory basis. Prerequisites These instructions assume you have a PHP site or app you want to add WordPress user authentication to (I’ll call it your «external site»). They also assume you have a second, WordPress site hosted by WordPress VIP, not an ordinary site or self-hosted WordPress site.