How to delete a subdomain on the main domain server.

The steps to delete a subdomain from the main domain server are as follows:

1. Log into the administrator account on the main domain server.
2. Open the “Server Manager.”
3. Select “Tools” > “Active Directory Domain Services” in the left pane.
4. Expand the “Domain Name System” in the “Active Directory Domain Services” management console.
5. Locate the record of the subdomain to be deleted, right-click on the record, and then select “delete”.
6. Click “Yes” in the pop-up confirmation dialog box to confirm the deletion operation.
7. Wait for the deletion operation to complete.

Please note that deleting a subdomain is a crucial operation and should be done with caution. Before deleting a subdomain, make sure to back up any relevant data and ensure that the subdomain is no longer needed. Once a subdomain is deleted, all associated users, organizations, and other objects will also be deleted, and cannot be recovered.