Stačí přidat další HTTP direktivy: <IfModule mod_rewrite.c> RewriteEngine on RewriteCond %{HTTPS} !=on RewriteRule ^(.*)$ https://%{HTTP_HOST}/$1 [R,QSA] </IfModule> více zde: https://hanssens.com/trials-and-tribulations/redirect-http-to-https-for-a-domain-in-plesk-12-5/