In order to complete certificate enrollment, the Web site for the CA must be configured to use HTTPS authentication.
The following example will assume that you have an Enterprise CA from which to issue certificates. Further, the assumption is that you have a Certification Authority Web Enrollment pages installed, either on that CA or on another computer in the domain.
This example will walk through the steps necessary to do the following:
Instead of using the former http://servername/certsrv location, you must connect to
https://servername/certsrv to request a certificate.