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
Solved

Windows 2003 forest domain level

Posted on 2012-12-26
5
962 Views
Last Modified: 2012-12-27
I am currently working on a project which includes replacing several 2003 servers with 2008 servers and migrating an exchange 2003 server to exchange 2010.  When I started the domain consisted of 4 2003 servers, one of which is also the exchange 2003 server.  All 4 2003 servers were DCs.  I believe this network never had a 2000 server but I can't guarantee that for certain.
I have added 4 2008 r2 servers to the network.  3 have been promoted to DCs, the 4th is to become  my Exchange 2010 server.  I have since demoted 2 of the 2003 servers.  Now for my problem.
When I attempt to install Exchange 2010, during the initial prep phase it errors out with the message "Error:  the forest functional level of the current active directory forest is not Windows 2003 native or better".  I have verified that my AD is 2003 by attempting to raise the level again - at both remaing DCs - and both reply that the AD is raised as far as it can go (2003).  I have also verified in Exchange System Manager that the AD is in native mode.  I believe that I would not have been able to promote my 2008 R2 servers to DCs if this was not the case.
Where else can I look for anything that would confuse the Exchange 2010 installation routine?
0
Comment
Question by:Cybertronnh
5 Comments
 
LVL 12

Expert Comment

by:Sommerblink
ID: 38722687
You can install 2008R2 domain controllers into a 2003 forest. The problem is likely caused by replication problems.

I would recommend halting everything that you're doing AD-wise and solve the replication issues first.

What do you get if you run 'repadmin /showrepl' from all your domain controllers, including your two legacy 2003 DCs? Do you see the inbound neighbors with relative current time stamps and the replication reported back successful?

On the 2003 servers, it may be necessary to install the 2003 Support Tools http://www.microsoft.com/en-us/download/details.aspx?id=15326 -32 or 64-bit.
0
 
LVL 23

Accepted Solution

by:
Nagendra Pratap Singh earned 167 total points
ID: 38722692
0
 
LVL 9

Assisted Solution

by:djsharma
djsharma earned 167 total points
ID: 38722900
0
 
LVL 26

Assisted Solution

by:Leon Fester
Leon Fester earned 166 total points
ID: 38723128
You can confirm your domain and forest functional levels by opening "Active Directory Domains and Trusts"
Then right-click the forest name and click "Properties"

You're specifically interested in the value of the "Forest functional level"
0
 

Author Closing Comment

by:Cybertronnh
ID: 38723690
It was indeed that the forest level had not been raised - exactly what the message was telling me.   Thank you all for your help!
0

Featured Post

The Eight Noble Truths of Backup and Recovery

How can IT departments tackle the challenges of a Big Data world? This white paper provides a roadmap to success and helps companies ensure that all their data is safe and secure, no matter if it resides on-premise with physical or virtual machines or in the cloud.

Question has a verified solution.

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

Find out what you should include to make the best professional email signature for your organization.
Read this checklist to learn more about the 15 things you should never include in an email signature.
This tutorial will walk an individual through the process of transferring the five major, necessary Active Directory Roles, commonly referred to as the FSMO roles to another domain controller. Log onto the new domain controller with a user account t…
This tutorial will show how to configure a single USB drive with a separate folder for each day of the week. This will allow each of the backups to be kept separate preventing the previous day’s backup from being overwritten. The USB drive must be s…

808 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