Force SSL HTTPS for subdomain with .htaccess

Question

I have this code for forcing SSL on a website generally:

RewriteCond %{HTTPS} !=on
RewriteRule ^ https://%{HTTP_HOST}%{REQUEST_URI} [L,R=301]

Answer 1

For debugging I use a website I found http://martinmelin.se/rewrite-rule-tester/

Using the rules you provided

RewriteCond %{HTTPS} !=on
RewriteRule ^ https://%{HTTP_HOST}%{REQUEST_URI} [L,R=301]

I got an error at

RewriteCond %{HTTPS} !=on

This might work for you

RewriteCond %{HTTPS} off
RewriteRule (.*) https://%{SERVER_NAME}/%$1 [R,L] 

Found the above example at https://www.sslshopper.com/apache-redirect-http-to-https.html