I was having the DHCP server fail to see active directory with error number 1059, where I was unable to authorize the DHCP server for IP address leasing. I have parent – child domain environment where I was trying to deploy DHCP server in the child domain.
There are plenty of forums out there concentrating on networking side, but I was installing the DHCP server on the child domain DC. Therefore, there should not be any networking and firewall issues. I even tried DCDIAG.exe and LDP.exe with pass as the end result.
Note: There is no need to disable IPv6 as Microsoft says that in Windows server 2008 and windows server 2008 R2, IPv6 does play some role in the proper working of the server.
Solution: My network connectivity and DCDIAG.exe tests passed with flying colors. After further investigation the solution was to add the “administrator” account of child domain to the “enterprise administrators” group in the forest. That means simply log on the parent DC and add the CD administrator to the group. After restarting the DCHP service on the Child DC everything started working as it should be.
So, network connectivity, DNS are not the only factors. We have to look into permissions as well so that the Child DC can authorize the DHCP in AD.
Hope this post will come handy to admins just like me.
Thanks for reading.