Why does the redirect to https work only on the main page?

Question

htaccess

It works on the main one, but not on the internal ones. Where to dig, tell me.

php_flag session.use_trans_sid Off
RewriteEngine on
******** Этот код по рекомендации хостинга spaceweb*****************
SetEnvIf X-Forwarded-Proto https SERVER_PORT=443
SetEnvIf X-Forwarded-Proto https HTTPS=on
RewriteCond %{HTTP:HTTPS} !=on [NC]
RewriteRule ^(.*)$ https://%{SERVER_NAME}%{REQUEST_URI} [R=301,L]
***************************************************************************************
Options +FollowSymLinks
RewriteRule ^index.php - [L]
RewriteCond %{REQUEST_URI} !^/_img/
RewriteCond %{REQUEST_URI} !^/_scripts/
RewriteCond %{REQUEST_URI} !^/admin
RewriteCond %{REQUEST_URI} !^/download/
RewriteRule !\.(gif|jpg|css|ico)$ /index.php [L]
#php_flag  display_errors        on
php_value error_reporting        8191
<Files admin/index.php>
Order Deny,Allow
Allow from all
</Files>

Answer 1

Don't worry and change to

RewriteEngine On
RewriteCond %{SERVER_PORT} !^443$
RewriteRule .* https://%{SERVER_NAME}%{REQUEST_URI} [R=301,L]

or

RewriteEngine On
RewriteCond %{HTTPS} =off 
RewriteRule (.*) https://%{HTTP_HOST}%{REQUEST_URI} [QSA,L]