HTTPS 404 Error

I have added SSL to my owncloud site however putting https:// results in error 404 - url not found on this server

The normal http:// version however works completely fine.

How do i add the https:// URL to the server?

EDIT
On the remote server where owncloud is hosted. https:// works fine. On any other computer it does not.

Did you try to use the IP address instead of the hostname in the URL (with https) ?If so did you get the same issue ?