Followed several KB articles to move our DHCP from an older 2003 server to a 2008 R2 server that is also our 2nd DC.
Since we needed to preserve already existing scopes on the 2008 R2 I opted to use a 'merge' option (as discussed here https://support.microsoft.com/en-us/kb/281626
thus exporting only the scopes we need from the old server and importing the scopes (instead of ALL) on the new 2008 R2 server.
export c:\temp\dhcpdb 10.0.0.0 184.108.40.206
import c:\temp\dhcpdb 10.0.0.0 220.127.116.11
The export on the 2003 server worked fine and I managed to import on a 2008 R2 member server without issues as a test. However, when I try exactly the same process on the intended server (which is a DOMAIN CONTROLLER) I get an 'Access Denied" error. Please note that I have already looked at this article and similar one's (https://support.microsoft.com/en-us/kb/890480
) and I AM LOGGED IN AS DOMAIN ADMIN which is a member of the local administrators group on the server. I even tried with an account that I made ENTERPRISE ADMIN, but same 'access denied' result. The exported data was copied to the 2008 R2 DC server, so it was not coming over the network. I tried importing using a regular cmd prompt (run as admin) and powershell but no luck. I did see this article (https://www.experts-exchange.com/questions/28645917/NETSH-DHCP-SERVER-Access-Denied.html
) about changing the account as I do suspect it is running within a local context as no account etc. is specified, but since the server I am moving it to hosts live scopes for other subnets I am reluctant to make changes without some feedback. Help :-)