Error: The zone cannot be created. A conditional forwarding zone already exists for that name.

 

I tried to create a secondary DNS zone, but I received the following error: The zone cannot be created. A conditional forwarding zone already exists for that name.

• Connect to the domain controller.
• Go to Start > Run > Dnsmgmt.msc
• Point to the server’s name > Properties > Forwarders ,and remove the domain  that you are trying to create the secondary DNS zone.
• Re-create the zone from the start.

Thanks to: http://vvirtual.wordpress.com/2010/09/28/error-the-zone-cannot-be-created-a-conditional-forwarding-zone-already-exists-for-that-name/