Login Issues with 2.0.15 - Unable to verify referring url.

[CMBurns]

After migrating to a new server which included an update from 2.0.14 to 2.0.15 and running the new forum with SSL, there is that one issue that I can't get rid off.

After a little bit of research I made the recommended changes that I found here https://wiki.simplemachines.org/smf/Login_error_2.0.14. Even after these modifications the errors were not gone.

I investigated a little bit and found out that the message is thrown by that part of security.php after action=login2 is called

Code Select Expand

// Okay: referrer must either match parsed_url or real_host.
if (isset($parsed_url['host']) && strtolower($referrer['host']) != strtolower($parsed_url['host']) && strtolower($referrer['host']) != strtolower($real_host))
{
$error = 'verify_url_fail';
$log_error = true;
}
}

I understand that the session of the user is checked here. As this code is called from the index.php my understanding is that there isn't a session yet that can be checked. If the user moves on the login form (action=login) everything is working fine.

Any idea how to get rid of the errors?

[Arantor]

You need to make the recommended changes actually on the theme you're using. Also, there will be a session created after literally any page visit.