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.
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.
For information, you can apply the tutorial to remove the last domain control from an Active Directory environment.