How to redirect owncloud to https with cpanel

CPANEL redirect feature redirects both HTTP and HTTPS.
Therefore, if you try to redirect http to https , you will create a loop.

This is what CPANEL Redirect adds:
RewriteCond %{HTTP_HOST} ^your.domain.com$
RewriteRule ^/?$ “https\:\/\/your\.domain\.com\/” [R=301,L]

Edit the .htaccess of the subdomain you created for owncloud, and add at the end:
RewriteEngine On
RewriteCond %{HTTPS} off
RewriteRule (.*) https://%{HTTP_HOST}%{REQUEST_URI}

“%{HTTPS} off” is saying if the connection is insecure, send it to https.