2003 active directory

Single domain 2003 active directory accept to join 2 computers in the same name & when disjoining one of them it will mark X on the computer name , What is the problem and how to solve it ?
Thanks
bnusirAsked:
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KutyiConnect With a Mentor Commented:
Are you using imaging software to deploy these PCs.  If you are and the SID was not changed it could explain this as AD sees the name match a Security Identifier and is allowing it.  You would need to change the SID, as mentioned in my previous post.  
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x86fixCommented:
You cant have 2 wiht the same name
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bnusirAuthor Commented:
Yes ,
two computers with the same name.
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KutyiCommented:
x86fix is correct, they cannot have the same name and the red x would indicate an error in the join/disjoin.  If you have disjoined the workstations simply delete the computer accounts from Active Directory.  If you have attempted to join them, then remove and rejoin using different names.  If these PCs have been built using an image software package, like Ghost then you will need to change the SID on the PCs and you can use NEWSID from Microsoft, found here: http://technet.microsoft.com/en-us/sysinternals/bb897418.aspx
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trivalentCommented:
I would do this:

Workstation 1:

Remove from domain, place into WORKGROUP domain
Reboot
Rename Computer
Reboot

Workstation 2:

Remove from domain, place into WORKGROUP domain
Reboot
Rename Computer
Reboot

Then, go back into AD and ensure that the Computer Accounts have been removed.  If not, then remove then.

Now, rejoin both PCs back into the domain.  Don't try and do all these steps in one crack or it won't work as expected.
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x86fixCommented:
I agree but I would dijoin at the same time.  you may even want to do that offline.  Delete the account on the Server and then rejoin with different names
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bnusirAuthor Commented:
I agree with all of you but the problem is appearing again in other computers , I can join more than a computer in the same name to the active directory ?
Do any of you know how to resolve this in the active directory ?
Thanks
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trivalentCommented:
You CANNOT have duplicate names.  Figure out a way to make each one unique.
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bnusirAuthor Commented:
In our case
the active directory accepts duplicate names without stating that a duplicate name exist, this is my problem , I want the active directory to reject duplicate names How?
Normal  case
Active directory will reject duplicate name.
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x86fixCommented:
It seem to me that if you know the rules you just do a quick check for the name you want to use before you use it or use a slightly more complex naming convention
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