Active directory: Delete a child domain

Intro

In the article Active directory: setting up a child domain where I explain how to configure a child domain in an Active Directory environment, I will explain here how to delete a child domain.

As a reminder, when setting up the child domain, a trust relationship was created between the two domains and DNS delegation on the parent domain’s controlling servers.

relationship approval DNS

Before starting the procedure you must:

  • You demote the other domain controllers, the procedure deals with the last controller.
  • Make sure that no more resources do not need objects in the domain (users, workstations, servers …). To merge domains, you can use the ADMT tool.
  • Have an administrator account of the parent domain.


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