http://bugs.winehq.org/show_bug.cgi?id=11444
--- Comment #40 from Hans Leidekker hans@meelstraat.net 2008-12-05 07:17:52 --- Created an attachment (id=17656) --> (http://bugs.winehq.org/attachment.cgi?id=17656) wininet: Set secure flag when scheme is https.
The app passes an https url to InternetOpenUrl without setting the flag INTERNET_FLAG_SECURE. It makes sense to try a secure connection non-the-less.
Can you try this patch?