Ftp into your server and go inside the public_html directory. Download the file called wp_config.php. Open this file in any text editor( notepad++ recommended) and enter this at the very end

PHP Code: 
define('WP_SITEURL', 'http://www.domain.com');
define('WP_HOME', 'http://www.domain.com'); 
Replace www.domain.com with whatever your domain is. Save it and upload ( overwrite) this file back into your public_html directory.
CloudShadow Reviewed by CloudShadow on . HTTP changed to WWW problem Hi, I have a wordpress site and under the general settings I have changed the domain name from http:// ... to www. ... and since than the site is down and I cant even log in to admin. Do you know any tips to do and get it back, please? Thank you.. Rating: 5