I have 2 old domain controllers that no longer exist showing in the "Manage Authorized Servers" in "DHCP", when I try to unauthorize them I get an error that says "There is no such object on the server."
I have 2 old domain controllers that no longer exist showing in the "Manage Authorized Servers" in "DHCP", when I try to unauthorize them I get an error that says "There is no such object on the server."
Try right click on ADSI Edit and click connect to. In connection settings, connection point, select or type a Distinguished Name or Naming Context. Enter CN=NetServices,CN=Services,CN=Configuration,DC=Your Domain,DC=com then click ok.
Expand the default naming context, highlight the path in the left pane, and you should see CN=DhcpRoot on the right.
Double click it, and then check for and edit the dhcpServers attribute to reflect the correct computers. The restart DHCP service.
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That should be correct having them in CN=NetServices only. As a test here I unauthorized and that removed the server in CN=NetServices, then I reauthorized it and it was added back to CN=NetServices, nothing in the dhcpServers attribute.
Did you manually add them also to dhcpServers attribute? At some point I think the location changed. The active ones are also in CN=NetServices right? I think that is sufficient to have them in in CN=NetServices.
So to clear it's in the CN=NetServices container and the domain controller is gone anyway then yes it should be fine.
Ok, yes and I think you'll need to restart the DHCP service as well after removing the bogus ones.
from dhcpServers attribute? Yes. I'm glad to hear the issue is sorted. I'm not sure why the active ones are not listed. Another check is from PowerShell Get-DhcpServerInDC
Ok, good. Then you can double click CN=DhcpRoot on right then scroll down to dhcpServers attribute and edit to reflect the correct computers. Then restart DHCP service.
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When you open? or when you type in the Naming Context? If the latter then there may be a typo in the path
Just checking if there's any progress or updates?
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