Demote second Domain Controller in Child Domain

Marcus Wong Theen Nam 1,061 Reputation points
2021-11-09T03:38:24.477+00:00

I have a root domain and one child domain as below and each of them has 2 domain controllers:

abc.com (Root)
sub.abc.com (Sub domain)

In sub.abc.com, there are 2 domain controllers and I would like to demote the second one which is not holding any FSMO role of sub.abc.com. When I go through the demotion wizard I can see the "Remove DNS delegation" is ticked by default without any credentials provided. Shall I proceed with Next without putting any credentials or I have to untick it since I still have a domain controller running in the child domain? If I proceed with ticking the "Remove DNS delegation" will it remove anything and affect the DNS functionality of the child domain and any domain controller that is still running?
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Active Directory
Active Directory
A set of directory-based technologies included in Windows Server.
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  1. Dave Patrick 329.9K Reputation points Microsoft MVP
    2021-11-09T04:03:45.89+00:00

    Remove DNS delegation when doing DC demotion will only remove SRV records or zone hosted by this DC, not from other DCs with DNS zone.

    --please don't forget to upvote and Accept as answer if the reply is helpful--


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