Question : How to remove a child domain

Hello Everyone
I'm not too sure how to remove a child domain, the child domain's domain controllers have been removed. Now how do I get rid of the actual domain, it's still listed in AD domains and trusts, and the remove button is greyed out While under management on the Parent domain.

Answer : How to remove a child domain

Ok....I found this article on another site. Looks like the author had the same issue as you and also tried the above article to no avail.

Please can you try this:

As I already mentioned that I was unable to resolve the issue by the steps provided in
http://support.microsoft.com/kb/216498/en-us
http://support.microsoft.com/kb/230306

I googled for this issue and after trying many solution i came across something which works .
I hope it will help others also so I m sharing the step with u

1. Click Start, click Run, type ntdsutil, and then press ENTER.
2. At the Ntdsutil command prompt, type domain management, and then press ENTER.
3. Type connections, and then press ENTER.
4. Type connect to server Domain_Controller_Name, and then press ENTER.
5. After the following message appears, type quit, and then press ENTER:
Connected to Domain_Controller_Name using credentials of locally logged on user
6. At the domain management prompt, type list, and then press ENTER.
7. Note the following entry:
DC=DomainDnsZones,DC=Child_Domain, DC=extension
For example, if the child domain is Contoso.com, note the following entry:
DC=DomainDnsZones,DC=contoso,DC=com
8. Type the following command, and then press ENTER.
delete nc dc=domaindnszones,dc=Child_Domain,dc=extension
Note In this command, Child_Domain represents the name of the child domain that you want to remove. For example, if the child domain is Contoso.com, type the following command, and then press ENTER:
delete nc dc=domaindnszones,dc=contoso,dc=com
9. Quit Ntdsutil.