I want to deploy a RODC sever in an existing domain.I fulfilled all pre-requisite for RODC.There are two DCs in the domain both 2008 r2.When i try to install third DC in same forest,the Read only active directory option is greyd out.
It say there are two authoritative domain servers in the domain. Forest functional level is 2008 for both the servers and adprep is also done .still option is greyd out any one please help??
many Thanks