Can't open AD users and computers

I have a win2003 sp2 DC, with DNS installed and trying to open ADUC I get the error:

"naming information cannot be located because library not registered"

I have another DC where AD opens fine. nothing unusual in Event log, have restarted server. DNS appears to work OK, can PING everywhere, nothing in the DNS event log. it has all worked OK previously for the last few years.

Please help!!

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.

try re-installing the adminpak.msi it sounds like one of the dll's isn't registered properly.
PeteAuthor Commented:
it doesn't have adminpak installed, it's a DC.

it does have exchange system tools installed on it. sophos, flash, shockwave, office 2007, .net 2, .net 3, adobe reader and sophos.

When you promote a server to a DC it install adminpak.msi for you.
Try reinstall it as meantioned previously!

You can always try regsvr32 C:\Windows\System32\dsadmin.dll
I'm not sure if it's that dll but you an always try...
PeteAuthor Commented:
re-registering activeds.tlb did the trick.


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

If you've got an answer then it would be nice if you could close it.


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
Windows Server 2003

From novice to tech pro — start learning today.