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Duplicate Names

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Kjonnnn

IS-IT--Management
Jul 14, 2000
1,145
US
All of a sudden, laptops running Windows 2000 are saying "Duplicate name on network"

There are none.

What gives here?
 
Is it possible that a particular user is logging on in more than one physical location? -md
 
That wouldn't matter because users profiles are different than a machine name running on the network. When it says duplicate name on network it is talking about the actual computer name given to the box when it had the OS installed.

Jeremy
 
Yea. NT doesnt care about multiple user loggins.

Im also starting to get messages saying "the workgroup / domain name cant be the same as the computer name."

Thats not true either.

I'm getting a lot of weird messages around here relating to the DOMAIN. When I log them out of the domain and into just a work group.. no problem.

Below is my post on some of the other forums.



I hope someone can help with this.

Our network consists of about 100 computers using 95, 98, NT and 2000. We have a PDC and BDC running NT40 Server.

On the PDC, Exchange, WINS and DHCP are also running. The BDC is just a BDC and not running any services
.
We have a domain called “MAIN” and a workgroup called “ALL” that we use. Ninety percent of the users log into the MAIN domain.

Last week we installed a firewall on out our network. We changed all of the IP address and set every computer to use DHCP (whereas pre-firewall, 50% of the computers had manually set IP addresses).

PROBLEM: For some reason, if a person logs off, the PDC wont authenticate them back on to the domain. It will give various messages, “unable to find domain controller” or “MAIN domain is busy”, etc. Now they can still get their email which in on the same server and uses NT authentication.

What’s odd is that on each computer that can’t log in, the Computer Brower, Workstation and Net Logon services will not start.

Now if I take those computers out of the Domain “MAIN” and log them in under the workgroup “ALL” everything works.

I reinstalled the BDC software twice, with the same results. Its recognized as a BDC, but those services wont start, so therefore on the BDC, Server Manager, User for Domains, and Network Neighborhood come up blank.

What on the domain would be shutting those services down? Is there a way to fix this?


 
Do you have two DHCP servers running ( possibly the firewall has a DHCP server built in ) ?
 
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