How do I remove DHCP servers in the authorized list that no longer exist on my network?

Hi, I was going through the list of authorized DHCP servers on my network via the DHCP Server Manager console. (Action/Manage Authorized Servers.)

In the list there are a couple of servers that no longer exist as DHCP servers on my network.

I try to unauthorize them, but I receive a message "There is no such object on the server."

Any suggestions on how I can remove these from the list another way?

My Environment:
Mostly Server 2003 and a couple of Server 2008 boxes.  The servers in question on the list were 2003 boxes.

Thanks in advance.

rsnellmanIT ManagerAsked:
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Darius GhassemCommented:

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sfossupportCommented:

Netsh is one of my favorite utilities. There are so many options and its one of the best troubleshooting tools.

netsh dhcp delete server <servername>
rsnellmanIT ManagerAuthor Commented:
Have you ever used Netsh to delete a dhcp server that within the authorized DHCP server list says it cannot be removed because object doesn't exist?

I just don't want to screw this up, if you know what I mean.

Thanks.
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Darius GhassemCommented:
Look over the link
Kash2nd Line EngineerCommented:
use the netsh command. before using it, get the exact name which you see in the DHCP console. you will be fine.
rsnellmanIT ManagerAuthor Commented:
I've looked over the link, but it requires the use of ADSIEdit tool, which means I would need to reboot a DC into Recovery DC mode, correct?

I have a Server 2008 R2, could I use ADSIEdit tool without rebooting the server to delete these DHCP server entries that way?
 
Darius GhassemCommented:
Yes you should be able to use ADSI without a reboot
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Windows Server 2003

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