DOMAIN NAME AD NAME Migration/Removal

NaplesFLDave
NaplesFLDave used Ask the Experts™
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I am a the System Administrator at a company that has 3 Windows Domain Controllers. Two of them are Windows 2003 and one is a WIndows 2008 R2. Running in 2003 level.
The Previous Domain name was Sixl's.com when the servers were running windows NT3.5 and 4.0. Now that they are running Windows 2003 and Active Directory, the old DOMAIN NAME seems to be hanging around. I checked the AD and there is only ONE DOMAIN and it is called sixls.com. All the users, etc are in that tree. But when you log into the network you use sixl's as the domain name. The sixls domain does not seem to be the login Domain. Yet all AD functions, security, policies, etc work fine.
So I seem to be missing some understanding about where this old Domani name is living and why it still seems to be the DOMAIN authority. The Old Name has an apostrophy in it and that is causing problems in some of our new endeavors. That is why they have a AD Domain of sixls.com now.

How can I get rid of the OLD Domain Name from the Domain Controllers so the new AD Domain sixls.com is all there is.
I checked SItes and DOmains and Trusts and there is only One top level Domain and that is sixls.com.
I assume that the OLD domain name was Migrated into the new DCs as upgrades through the years.

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Chris DentPowerShell Developer
Top Expert 2010

Commented:

You can't, this is by design.

Every AD Domain has two names, a DNS Domain Name, and a NetBIOS Domain Name. The logon box on XP (etc) shows the NetBIOS domain name.

Chris
This is probably the netbios domain name in active directory users and computers right click the domain and choose properties. Under the general tab you should have a name if this is the old name and this is what you want to change:
here is a helpful article:
http://www.experts-exchange.com/OS/Microsoft_Operating_Systems/Server/2003_Server/Q_21254187.html

Author

Commented:
Here is a screen shot of the AD properties screen.
I cannot change the Old Name from here.

ADNetbiosName.jpg
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Chris DentPowerShell Developer
Top Expert 2010

Commented:

You cannot change it short of renaming the domain, and then you'd only be swapping this name for another in the same format (you would still have both NetBIOS and DNS domain names).  This is by design it is not an error or an oversight.

Chris
Neil RussellTechnical Development Lead

Commented:
Read the article that mbarsheshat01 pointed you to above. It explains about domain renaming and it CAN be done.
 
Chris DentPowerShell Developer
Top Expert 2010

Commented:

Remember that by changing it (which uses the Domain Rename tool) you do nothing more than swap it for another name in the same format.

You cannot make the NetBIOS name the same as your DNS Domain Name, you will always have two domain names, one NetBIOS and one DNS. The NetBIOS name will always be used in the logon box in your network clients.

Chris
PowerShell Developer
Top Expert 2010
Commented:

Actually, disregard my comments, I wasn't reading enough and the change you propose is possible using the domain rename tool described.

http://technet.microsoft.com/en-us/library/cc738208%28WS.10%29.aspx

You'll find the 2008 R2 server has the tool installed already but you will have to follow the documentation carefully and I advise you test it if possible.

Chris

Author

Commented:
So I CANNOT have a NETBIOS name of sixls in my user's logon dialog box?
It has to be something different?
I don't understand. If I was creating a NEW network etc. And set up my sixls.com DOMAIN, what would be in the DOMAIN window of my user's login dialog window then?

And I did read the InformIT article on renaming. Pretty good stuff. It does not mention any limitation on using the same NETBIOS name as the DNS / AD name though.

Here is another thought that another tech suggested. Upgrade all the servers to WIndows 2008, raise the functionality to 2008 levels.

Does 2008 AD have a better way to rename the Netbios name then?

Thanks.

*Dave*
Chris DentPowerShell Developer
Top Expert 2010

Commented:

> So I CANNOT have a NETBIOS name of sixls in my user's logon dialog box?

Yes you can, you just can't use the DNS Domain anme sixls.com. I read your original as using sixls rather than the problematic name, hence my poor guidance.

> Here is another thought that another tech suggested. Upgrade all the servers to WIndows 2008, raise the functionality
> to 2008 levels.

Won't help, you'll still have the problem. And no, the method is the same.

Chris

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