after an upgrade to version 3.92.gpl GPL, the Re-Check Configuration is forced and displays this error message:
Failed to save enabled features : The Apache configuration on your system does not appear to be listening on port 10000, which is needed to host SSL websites. If you do not plan to host SSL sites, this feature should be disabled in Virtualmin's module configuration page.
when disabled the feature SSL, the check goes through and is OK.
it's not possible to reenable the SSL feature and i'm not sure if having listening apache on port 10000 is a good idea as it will block the webmin 10000 port. so i suppose this a bug. apache is listening to 443 and 80 as stated in ports.conf