Open Command Prompt and type repadmin /showrepl . If you see "Successful," your DCs are officially talking.
The wizard will grumble about "Physical Network Adapters" or "NT 4.0" compatibility. As long as you get the green checkmark at the top, hit Install . Phase 4: The Handshake The server will reboot automatically. Once it’s back up: Open Command Prompt and type repadmin /showrepl
Select "Add a domain controller to an existing domain." Provide your domain name (e.g., ://contoso.com ) and the credentials of a Domain Admin. Domain Controller Options: As long as you get the green checkmark
Before you touch the AD DS role, your new server needs a solid foundation. Domain Controller Options: Before you touch the AD
Building an additional Domain Controller (DC) isn’t just about redundancy; it’s about ensuring your network never has a "bad day." Think of it as hiring a second manager for a busy office—if one goes on vacation (or crashes), the other keeps the business running without anyone noticing.
Ensure the new server’s time matches the existing DC. Active Directory hates time discrepancies (it’s a Kerberos thing). Phase 2: Installing the Infrastructure Open Server Manager and click Add roles and features .