You've probably previously added an exception in your browser (or possibly have the redirect cached). Looks like you're using AWS for your cert. See step 3 on

You've probably previously added an exception in your browser (or possibly have the redirect cached). Looks like you're using AWS for your cert. See step 3 on http://docs.aws.amazon.com/acm/latest/userguide/gs-acm-request.html http://docs.aws.amazon.com/acm/latest/userguide/gs-acm-reque... You need a cert with a Subject Alternative Name for www (or *, which is still free with aws).