Unknown Authorised DHCP Server RRS feed

  • Question

  • Hi,

    I have an unknown authorized DHCP server on my 2012R2 DHCP Manage Authorized Servers.


    My current thinking is this is an obsolete reference to the old SBS Server and can be removed, as I have not been able to find any clear indications when searching for confirmation.

    I would like to confirm this if anyone knows before I remove this entry.


    Wednesday, April 27, 2016 9:55 PM


  • Try to ping it then RDP it. If not responding, check the AD account in AD and take note of the value for lastlogon attribute on all your DCs - The highest value reflects the last time this server authenticated itself against AD. If the last logon dates since a while, you can safely remove its reference.

    This posting is provided AS IS with no warranties or guarantees , and confers no rights.

    Ahmed MALEK

    My Website Link

    My Linkedin Profile

    My MVP Profile

    Thursday, April 28, 2016 12:19 AM