Install the role service under IIS

At the Server level - enable DS mapping under authentication:

Create the web site.

Enable it for HTTPS ( bindings )

Set the site to require certs under:

Enable the site :

C:\Windows\SysWOW64\inetsrv>appcmd unlock config /section:clientCertificateMappingAuthentication
Unlocked section "system.webServer/security/authentication/clientCertificateMappingAuthentication"
at configuration path "MACHINE/WEBROOT/APPHOST".

C:\Windows\SysWOW64\inetsrv>appcmd set config "CertAuthWebSite" -section:clientCertificateMappingAuthentication /enabled:true
Applied configuration changes to section "system.webServer/security/authentication/clientCertificateMappingAuthentication"
for "MACHINE/WEBROOT/APPHOST/CertAuthWebSite" at configuration commit path "MACHINE/WEBROOT/APPHOST/CertAuthWebSite"

Do a reset for good measure ( at least I do )

C:\Windows\SysWOW64\inetsrv>iisreset /noforce
Attempting stop...
Internet services successfully stopped
Attempting start...
Internet services successfully restarted