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you were not connected because a duplicate name exists on the network

Good morning,

I retired a server from service on our domain over the weekend. there are a number of shortcuts on the network pointing to the old name, so i created a CNAME in DNS pointing to the new server as a work around until I could repair everything.

Computer on the domain come up with the error "you were not connected because a duplicate name exists on the network" I have confirmed that a duplicate name does not exist, and an NSLOOKUP returns the correct information for the cname.

If I attempt to browse to the old server name from a computer that is not on the domain, it connects correctly. We do not have a WINS server, and all of our servers are 2003 or 2008. The PCs are XP or Windows 7.

I have tried the registry entry found in the MS KB, but it has had no effect. any help would be greatly appreciated.
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craigzeigler
Asked:
craigzeigler
1 Solution
 
apache09Commented:
When you retired the old server, did you put in a new/replacement one?

If you put in a new replacement server, was this built from scractch? Or did you use an image from the old one?

Almost sounds like a SID issue and or an AD issue where PCs are trying to re-add themselves to a server which already showing them as already esisting
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David Johnson, CD, MVPOwnerCommented:
which computer on the domain is giving the error?
you may have to manually clean out your dns records to remove the remnants of the machine you retired.
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aoakeleyCommented:
you did not state which KB you followed. But this sounds like your issue, and provides a solution

http://www.wincert.net/tips/networking/1767-duplicate-name-exists-on-the-network-when-using-dns-alias.html 

note also the setspn commands at the bottom
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craigzeiglerAuthor Commented:
The old server was simply removed from the domain. The cname was added to point the old name to a different server.
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craigzeiglerAuthor Commented:
That link is what we tried but no luck.
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dan_blagutCommented:
Hello

Is the old server an DC controller? Are you cleared the cache (restart the DNS service) after you remove the CNAME?

Dan
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craigzeiglerAuthor Commented:
The server was not a DC. It was just a terminal server that had a powervault attached. We needed to move the powervault to a more stable server.
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craigzeiglerAuthor Commented:
We have dealt with and repaired most of the broken links. I was hoping to find a way to make this a smooth transition, and none of the other answers I have found have worked. There is no reason to keep this open at this point.
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craigzeiglerAuthor Commented:
Dealt with the broken links.
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Kevin CrossChief Technology OfficerCommented:
Glad you got it figured out. I believe I have seen that in the past and it is an issue with NETBIOS (which is funny as it should be all DNS based now, right :)), but using the CNAME works except from going from command line like Start > Run and \\cname or through shortcuts. It is hard to remember, but I believe having this as an A record where you bind the old server's IP address as an additional IP on the new server or simply changing the old A record to point to the same IP of the new server helped. Just in case this comes up again.
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