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change single label dns to .local

Posted on 2006-07-05
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Last Modified: 2012-06-21
Our Windows 2000 domain is currently using a single label DNS name. (example:  .mycompany)  We want to move it to a ".local" DNS name.  (example:  .mycompany.local).  How can this be accomplished? This was originally upgraded from NT4 to Windows 2000 and it retained a single label dns name from the upgrade that we now need to change.

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Question by:sparky2112
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oBdA earned 500 total points
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The first thing to do is to workaround the problems resulting from the single-label name; check here:
Information about configuring Windows for domains with single-label DNS names
http://support.microsoft.com/?kbid=300684
The problem is that you can't rename a Windows 2000 domain. That leaves you with two options:
* Upgrade to Server 2003, then use the AD rename tools to rename your domain.
* If your domain is still running in mixed mode, you could do a downgrade to an NT4 domain, and then upgrade again with the correct name. This will require that you re-join all machines running W2k or later to the "intermediate" NT4 domain, though, as those won't authenticate with an NT4 DC anymore now that they're in an AD domain.
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