User is not authenticating by Windows 2003 domain controller, please assist

User is not authenticating by Windows 2003 domain controller.

We have two DCs, one W2003, next one is W2000

We upgrade our domain to Win 2003, but still we kept the W2000, will demote later on.

Right now some users are authenticating by W2000 DC.

How can I Force user authentication to 2003 domain controller?

Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

Set the DNS of each user computers to the find the Win 2003 first.
Brian PiercePhotographerCommented:
The DNS will not help - the DC that a client chooses to authenticate with depends of the site information and the SRV record properties. Assuming that all these DCs are in the same site you will need to manually change the SRV record priority for the LDAP service

Open the  DNS Console
Expand Forward Lookup Zone
Expamd _MSDCS > _TCP

Locate the LDAP and KERBEROS entries for the DC that tou want to be used and change the priority to 0

Locate the LDAP and KERBEROS entries for the other DC(s) that tou want to be used and change the priority to 1

I have to add that it is not normally a problem which DC a client authenticates to - why do you feel the need to change it ?

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
Brian PiercePhotographerCommented:
Why Delete ?
Feedback please
Force accepted.
EE Moderator
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Active Directory

From novice to tech pro — start learning today.