5- Windows Server 2022 Adding Additional Domain Controller To Existing Domain Or Forest Apr 2026

Keep and Global Catalog (GC) checked (standard practice for redundancy).

Note: This only installs the "books." We still need to "open the library." Phase 3: The Promotion (The Fun Part)

Choose where to replicate from. Selecting "Any domain controller" is usually fine, but if you're across a slow WAN link, pick the closest one. Keep and Global Catalog (GC) checked (standard practice

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 .

Don't forget to update your ! Your client computers should now have both DC IPs listed as their DNS servers. This ensures that if DC1 goes down for updates, your users can still log in and reach the internet. Ensure the new server’s time matches the existing DC

"Server-02" is much better than "Win-FE8392." Rename it and reboot now to save headaches later.

Now that the new server is a DC, change its Preferred DNS to 127.0.0.1 (itself) and set the Alternate DNS to your first DC. Pro-Tip: The "Forgotten Step" Don't forget to update your

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: