Active Directory Certificate Services (AD CS) provides customizable services for issuing and managing public key certificates used in software security systems that employ public key technologies.

This document discusses the planning and implementation of a Windows Server 2008 AD CS upgrade and migration from an existing Windows public key infrastructure (PKI), including scenarios and step-by-step instruction:

• AD CS Upgrade and Migration Overview
• Planning the Upgrade or Migration
• Performing the Upgrade or Migration
• Performing Post-Upgrade or Post-Migration Tasks

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