Active directory mode. Upgrade

Posted on 2009-04-16
Medium Priority
Last Modified: 2013-12-05
I am running windows server 2003 and exchange 2003 in my environment.
My AD is actually running domain functional level 2000 native and forest functional level win 2000
So what do I need to do to bring this to 2003 ( assuming theres no poiint to have 2000 now).? is it a simple process that can be done anytime? I have about 3 domain controllers
walkthrough appreciated

Question by:shankshank
LVL 59

Accepted Solution

Darius Ghassem earned 1000 total points
ID: 24159238
Moving the Forest Level to 2003 can be done at anytime.

LVL 71

Assisted Solution

by:Chris Dent
Chris Dent earned 900 total points
ID: 24159281

It's very simple, but it is not reversible. Basically once done you will not be able to add DCs unless they run Windows 2003 or higher. If that's not a problem then:

Domain Functional Level

1. Open Active Directory Users and Computers
2. Select the "domain.com"
3. Right click and select Raise Domain Functional Level
4. Select the new level

Forest Functional Level

1. Open Active Directory Domains and Trusts
2. Select any level
3. Right click and select Raise Forest Functional Level
4. Select the new level

It does not require a reboot, and is very likely to go unnoticed although that doesn't mean you shouldn't take a backup first :)


Assisted Solution

RightNL earned 100 total points
ID: 24159352
also be sure you don't have any trusts with legacy domains like nt4 ... that hurts.. because the trust will never come back ;)

Featured Post

Making Bulk Changes to Active Directory

Watch this video to see how easy it is to make mass changes to Active Directory from an external text file without using complicated scripts.

Question has a verified solution.

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

This process allows computer passwords to be managed and secured without using LAPS. This is an improvement on an existing process, enhanced to store password encrypted, instead of clear-text files within SQL
It’s time for spooky stories and consuming way too much sugar, including the many treats we’ve whipped for you in the world of tech. Check it out!
This Micro Tutorial hows how you can integrate  Mac OSX to a Windows Active Directory Domain. Apple has made it easy to allow users to bind their macs to a windows domain with relative ease. The following video show how to bind OSX Mavericks to …
Microsoft Active Directory, the widely used IT infrastructure, is known for its high risk of credential theft. The best way to test your Active Directory’s vulnerabilities to pass-the-ticket, pass-the-hash, privilege escalation, and malware attacks …
Suggested Courses

862 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