After installing SSL certificate, we need to configure the opencart in three things 1. Config.php 2. Admin setting 3. Htaccess 1. Config.php File: The config file is in two location. 1. In domain root We need to change the following line: define('HTTPS_SERVER', 'http://example.com/'); Changed To define('HTTPS_SERVER', 'https://example.com/'); 2. admin folder We need to change the following line: define('HTTPS_SERVER', 'http://example.com/admin/'); define('HTTPS_CATALOG', 'http://example.com/'); Changed to: define('HTTPS_SERVER', 'https://example.com/admin/'); define('HTTPS_CATALOG', 'https://example.com/'); 2. Admin Side: We need to change the some configuration in admin side: After login to the Opencart admin panel Goto the System -> Setting-> Server Tab In Security Secetion We need to change Use SSL to Yes Click to Save ...
CMS Development and Customization tutorial helps the opencart customization , extension development, issues fixing related information