How to set up WordPress Multisite on multiple domains without plugin?
It is important that you set the constant COOKIE_DOMAIN in the wp-config.php define( ‘COOKIE_DOMAIN’, ” ); The value must be empty, otherwise WordPress will always set it to your network’s $current_site->domain and you won’t be able to login into any of the other sites. From core: /** * @since 2.0.0 */ if ( !defined(‘COOKIE_DOMAIN’) && … Read more