Subdomains with almost the same content

Yes, multisite is not what you need here. I would try to map all subdomains on the same wordpress install, and then customize the template via the current URL. In the wp-config.php you then use the current URL as base url: define(‘WP_HOME’, ‘http://’ . $_SERVER[‘HTTP_HOST’]); define(‘WP_SITEURL’, ‘http://’ . $_SERVER[‘HTTP_HOST’]); You can also do different themes … Read more

WordPress Multisite blogs not working after domain swap

Have you copied and modified the specified lines from your wp-config.php from old site to the new site? The code should look something like this define( ‘MULTISITE’, true ); define( ‘SUBDOMAIN_INSTALL’, true ); $base=”https://wordpress.stackexchange.com/”; define( ‘DOMAIN_CURRENT_SITE’, ‘yourdomain.com’ ); define( ‘PATH_CURRENT_SITE’, “https://wordpress.stackexchange.com/” ); define( ‘SITE_ID_CURRENT_SITE’, 1 ); define( ‘BLOG_ID_CURRENT_SITE’, 1 );

new subdomain to apply as main domain

You will need to modify some values directly in the database in order to change the url of your primary domain. The values in the following tables needs to be modified: wp_options, wp_site, wp_sitemeta, wp_blogs and wp_#_options Try this link it has all the steps involved in detail