Active Directory Certificate Services on Server 2012

On the Server Manager click Add roles and features

Select Role-Based or feature-based installation

Select a server.

Select Active Directory Certificate Services and click OK with default IIS settings.

Select role services.

Click Install

Click Close

Start Configure Active Directory Certificate Services wizard.

Select Role Services to configure.

Specify setup type of the CA

Specify the type.

Specify the name.

Specify the validity period.

Database Locations.

Click Configure.

Configuration succeeded.

Open Certificate Authority from the start Menu.