?
Solved

DCPROMO Failed Forest Prep Error

Posted on 2006-07-08
2
Medium Priority
?
1,200 Views
Last Modified: 2012-06-27
I am trying to set up another domain controller as a backup. The error that I am getting is:

The Operation Failed:

The AD Installation wizard cannot continue because the forest is not prepared for installing Windows Server 2003. Us the AD prep command line tool to prepare both the forest and the domain.

"The version of AD schema of the source forest is not compatible with the version of AC on this computer. "

Any ideas?

 
0
Comment
Question by:Starquest321
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
2 Comments
 
LVL 29

Accepted Solution

by:
mass2612 earned 2000 total points
ID: 17066676
Hi,

Is there other Windows 2003 DC's in the domain? If tis is Windows 2003 R2 you need to run another adprep. See the article - http://technet2.microsoft.com/WindowsServer/en/Library/5022eea0-54bc-422f-b98b-ddb836c8ee851033.mspx?mfr=true

"Update the Active Directory schema on domain controllers. In Windows Server 2003 Active Directory networks, you will need to update the Active Directory schema before:

• Installing Windows Server 2003 R2 on a domain controller.
 
• Configuring a Windows Server 2003 R2 server to be a domain controller by using the Active Directory Installation Wizard (Dcpromo.exe)."

"To update the schema, on the schema master domain controller, insert Disc 2 and open the command prompt. Then, change to the Cmpnents\R2\Adprep folder of Disc 2, and type: adprep.exe /forestprep"
0
 

Expert Comment

by:MeridianBio
ID: 22062883
Thank You!!! This was exactly our case. We have a Windows 2003 functional level forest, so I was confused as to why it said that I my forest was not at Windows 2003 when attempting to run dcpromo on  a Windows Server 2003 R2 Standard 64bit server.

The caveat in our circumstance, is that our existing domain controllers are 32bit. So I had to use CD2 from the Windows Server 2003 R2 Standard 32bit disk.
0

Featured Post

Optimize your web performance

What's in the eBook?
- Full list of reasons for poor performance
- Ultimate measures to speed things up
- Primary web monitoring types
- KPIs you should be monitoring in order to increase your ROI

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

So you have two Windows Servers and you have a directory/folder/files on one that you'd like to mirror to the other?  You don't really want to deal with DFS or a 3rd party solution like Doubletake. You can use Robocopy from the Windows Server 200…
I've always wanted to allow a user to have a printer no matter where they login. The steps below will show you how to achieve just that. In this Article I'll show how to deploy printers automatically with group policy and then using security fil…
In this video we outline the Physical Segments view of NetCrunch network monitor. By following this brief how-to video, you will be able to learn how NetCrunch visualizes your network, how granular is the information collected, as well as where to f…
In this brief tutorial Pawel from AdRem Software explains how you can quickly find out which services are running on your network, or what are the IP addresses of servers responsible for each service. Software used is freeware NetCrunch Tools (https…
Suggested Courses

743 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question