Make a redirect from https://mysite.ru/ to https://www.mysite.ru/ 1C?

Question

1C-Bitrix

Hello.
How can I redirect from https://mysite.ru/ to https://www.mysite.ru/.
The site works on https://www.mysite.ru/, but when you try to go to the site on https://mysite.ru/ it gives an error,
403 Forbidden
Access denied.
In .htaccess

RewriteCond %{SERVER_PORT} !^443$ 
RewriteRule ^(.*)$ https://www.mysite.ru/$1 [R=301,L]

But when switching to kraski.ru, everything works. It is necessary to make sure that from https://mysite.ru/ to https://www.mysite.ru/ there is a redirect.
Help me please)

Answer 1

RewriteCond %{HTTP_HOST} !^www\.(.*) [NC]
RewriteRule ^(.*)$ https://www.%{HTTP_HOST}/$1 [R=301,L]

Everything is written in detail
here https://google.gik-team.com/?q=%D1%80%D0%B5%D0%B4%...
Click on any link