Apache detected external loop redirection with target URL after .htaccess setup

Question

I've played around with this for hours, trying to get it right. It seems to be working the way I want, but I'm getting this Apache error.

I want to set it up so if someone visits my main URL they're directed to https and www, so I have this in the htaccess file in the main public_html directory.

Options +FollowSymLinks
RewriteEngine On
RewriteCond %{HTTP_HOST} !^www.domain.com
RewriteRule ^(.*)$ https://www.domain.com/$1 [R=301,L]

RewriteCond %{HTTPS} off
RewriteRule (.*) https://%{HTTP_HOST}%{REQUEST_URI} [L,R=301,NE]

Next I want anyone who hits subdomain.domain.com or domain.com/subdomainname to redirect to https://subdomain.domain.com , so I have this in the .htaccess file in the subdomain folder.

RewriteEngine On
RewriteCond %{HTTPS} off
RewriteRule (.*) https://%{HTTP_HOST}%{REQUEST_URI} [R,L]
RewriteCond %{HTTP_HOST} ^subdomain\.domain\.com$ [OR]
RewriteCond %{HTTP_HOST} ^www\.subdomain\.domain\.com$
RewriteRule ^/?$ "https\:\/\/subdomain\.domain\.com\/" [R=301,L]

Any hints as to what I'm doing wrong?

Answer 1

Replace your subdomain .htaccess by this:

RewriteEngine On

RewriteCond %{HTTPS} off [OR]
RewriteCond %{HTTP_HOST} !=subdomain.domain.com
RewriteRule ^(.*)$ https://subdomain.domain.com/$1 [R=302,NE,L]