Server Fault is a question and answer site for system and network administrators. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

Windows Server 2008R2

I have Windows Server SP2 ( 32-bit) that was used to create the forest and DC. I am adding a new server with Windows Server 2008R2. Running dcpromo.exe on the R2 server and trying to add a new DC to the existing forest produces the error to run adprep /forestprep.

Any thoughts

share|improve this question

Yeah. YOu reated the domain with an older version of the server and the forest is not ready for the new one. Just do what it says. And - read the documentation to how domains work somewhere.

share|improve this answer
Yeah I guess he means 2008 SP2 -> 2008 R2, in which case a schema update would be required. – BoyMars Oct 4 '10 at 9:35

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.