This Active Directory domain controller currently performs the primary domain controller (PDC) emulator operations master ...

This Active Directory domain controller currently performs the primary domain controller (PDC) emulator operations master role. If you remove Active Directory Domain Services (AD DS) from this computer, operations that are performed by the PDC emulator, such as Group Policy updates and password resets for non-AD DS accounts, will not function properly. 

Before you continue, transfer the PDC emulator master role to a domain controller that is in the same domain as this domain controller. 

If it is not possible to transfer the role, first remove AD DS from this computer, and then use Ntdsutil.exe to seize the role. Use Ntdsutil on the domain controller that you plan to seize the role to; if possible, use a recent replication partner in the same site as this domain controller. 

Important: The PDC emulator master role is the only role that you can seize before you remove AD DS. For all other operations master roles, you must remove AD DS before seizing the role. 

For more information about transferring and seizing operations master roles, see article 255504 in the Microsoft Knowledge Base (http://go.microsoft.com/fwlink/?LinkId=80395).

Do you want to continue removing AD DS from this computer?