Hi All, I'm just about to change the IP address of our local DHCP server running on a Windows 2008 R2 domain server. When I change the IP will I need to unauthorise and re-authorise the DHCP server for the changes to be picked up by AD. Thanks in advanced. Cheers, Ben

hi, is not needed unauthorise and re-authorise dhcp server in active directory. HTHEdoardo Benussi - Microsoft MVP Management Infrastructure - Systems Administration https://mvp.support.microsoft.com/Profile/Benussi Windows Server Italian Forum Moderator edo[at]mvps[dot]org

Hi Ben, Hope these will help you. http://technet.microsoft.com/en-us/library/cc794931(WS.10).aspx http://technet.microsoft.com/en-us/library/cc758579(WS.10).aspx http://technet.microsoft.com/en-us/library/cc781697(WS.10).aspx Thanks.

Hi Ben, I'm wondering if the above information is helpful or if you have any further questions. If there is anything unclear, please feel free to let me know. BrentPlease remember to click Mark as Answer on the post that helps you, and to click Unmark as Answer if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.