Re: duplicate name exists on network

Looking at this again, I didn't notice the event logs. Have you tried
pinging the IP address and the computer name to see if either give you a
response?

--

Paul Bergson MCT, MCSE, MCSA, CNE, CNA, CCA

This posting is provided "AS IS" with no warranties, and confers no rights.



"Bruce D. Meyer" <bdmeyer44@xxxxxxx> wrote in message
news:#XTIHTqOFHA.3376@xxxxxxxxxxxxxxxxxxxxxxx
> Thank-you for your idea.
> I found no duplicates in AD Users and Computers. For fun, I went so far as
> to remove the computer name and reboot. oddly, before It was even joined
> back to the domain (at this point NO computer account exists in the AD
> Domain) I still received the error message that a duplicate computer name
> exists.
>
> Here are my thoughts:
> Next I will remove the computer from (again...) WINS Dynamic mappings on
the
> NT domain.
> The DHCP server is an NT server. So I am thinking every time I get an IP,
> WINS picks up the name. We are not running WINS on the AD side.
> I will again, make sure it isn't in server mgr on the NT side, and remove
it
> from AD users and computers.
>
> I will do all this while the machine is powered down. Now, my thought is,
> this. I have noticed we have elections occurring on the network. For some
> reason I am not completely clear of, workstations are often the default
> master browser. I know how to turn this off on the machines, and we have
> enough DC's to take over if on dies, or in the NT side, enough BDC's to
> handle it if the PDC died, but we haven't disabled the election thing yet.
> Getting back on track, I am assuming that the master browser, often a
> workstation has cached the workstation information and might be causing
> this.
>
> Another thought we will investigate today is, we have an NT server with
two
> NICS. I am told they both have the same IP address. I don't remember the
> term that was used to explain this, but apparently, it is for some type of
> increased throughput or something I am not familiar with. (Perhaps like
> bonding or something...) I read some articles about machines having dual
> nics giving WINS fits, with error messages like what I am seeing. What
would
> be useful, is a troubleshooting tool, that I could run that will tell me,
> WHO is announcing that the computer name is duplicated. Then I could track
> the issue down a bit easier.
>
> Thanks for any help.
>
> Bruce D. Meyer
>
>
>
> "Paul Bergson" <pbergson_nospam@xxxxxxxxxx> wrote in message
> news:eh58qKiOFHA.624@xxxxxxxxxxxxxxxxxxxxxxx
> > How about the machine name in AD itself?
> >
> > Open up Active Directory Users and Computers and check for duplicity
> there.
> > Do a search from the root of the domain specifying computer and enter a
> > name.
> >
> > --
> >
> > Paul Bergson MCT, MCSE, MCSA, CNE, CNA, CCA
> >
> > This posting is provided "AS IS" with no warranties, and confers no
> rights.
> >
> >
> >
> > "Bruce D. Meyer" <bdmeyer44@xxxxxxx> wrote in message
> > news:uvdlasgOFHA.3072@xxxxxxxxxxxxxxxxxxxxxxx
> > > We are getting ready to move about a 1,000 users from an NT domain to
an
> > > existing and in use AD domain. When we move computers from the NT
domain
> > to
> > > the AD domain, they all get the 'A duplicate name exists on network.'
> > error.
> > >
> > > Non of these machines have static WINS mappings. I have removed the
> > dynamic
> > > WINS mapping, I have removed them from server manager. I have even
> powered
> > > the machine down for three days (Easter weekend) and on the first boot
> > > Monday morning, after first configrming the above items, I get this
> error
> > > message on each and ever computer I boot up.
> > >
> > > I have no problem accessing AD shares, and resources, or the Exchange
> 5.5
> > > mail server on the NT domain.
> > > running nbtstat -n does NOT return a CONFLICT as expected.
> > >
> > > I cannot browse anything outside of the AD domain.
> > > net send etc doesn't work, again, I imagine because the netBT isn't
> > > starting.
> > >
> > > Any assistance, faqs, tips, hints, are appreciated. Heck, I'll even
read
> > the
> > > FINE manual, if someone would be as nice as to point out which one....
> > :-)
> > > Thanks for your consideration.
> > >
> > > Bruce D. Meyer
> > >
> > >
> > > Here are the errors in order from event log:
> > > Event Type: Error
> > > Event Source: NetBT
> > > Event Category: None
> > > Event ID: 4319
> > > Date: 4/5/2005
> > > Time: 11:06:27 AM
> > > User: N/A
> > > Computer: CS3592
> > > Description:
> > > A duplicate name has been detected on the TCP network. The IP address
> of
> > > the machine that sent the message is in the data. Use nbtstat -n in a
> > > command window to see which name is in the Conflict state.
> > > Data:
> > > 0000: 00 00 04 00 01 00 54 00 ......T.
> > > 0008: 00 00 00 00 df 10 00 c0 ....ß..À
> > > 0010: 01 01 00 00 00 00 00 00 ........
> > > 0018: 00 00 00 00 00 00 00 00 ........
> > > 0020: 00 00 00 00 00 00 00 00 ........
> > > 0028: 01 00 02 0a ....
> > >
> > > Event Type: Warning
> > > Event Source: MRxSmb
> > > Event Category: None
> > > Event ID: 3032
> > > Date: 4/5/2005
> > > Time: 11:06:27 AM
> > > User: N/A
> > > Computer: CS3592
> > > Description:
> > > The redirector was unable to register the domain COLUMBIASC on to
> > transport
> > > NetBT_Tcpip_{3C55F2DF-08D8-4191-B54 for the following reason: .
> Transport
> > > has been taken offline.
> > > Data:
> > > 0000: 00 00 00 00 04 00 4e 00 ......N.
> > > 0008: 00 00 00 00 d8 0b 00 80 ....Ø..?
> > > 0010: 00 00 00 00 bd 00 00 c0 ....½..À
> > > 0018: 00 00 00 00 00 00 00 00 ........
> > > 0020: 00 00 00 00 00 00 00 00 ........
> > >
> > > Event Type: Information
> > > Event Source: Application Popup
> > > Event Category: None
> > > Event ID: 26
> > > Date: 4/5/2005
> > > Time: 11:06:27 AM
> > > User: N/A
> > > Computer: CS3592
> > > Description:
> > > Application popup: Windows - System Error : A duplicate name exists on
> the
> > > network.
> > >
> > >
> > >
> > >
> > >
> > >
> >
> >
>
>


.

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