Microsoft KB Archive/288443

= Cannot Use Same NetBIOS Name When You Upgrade a Windows NT 4.0 Domain to a Windows 2000 Domain =

Article ID: 288443

Article Last Modified on 10/31/2006

-

APPLIES TO


 * Microsoft Windows 2000 Service Pack 1
 * Microsoft Windows 2000 Service Pack 2
 * Microsoft Windows 2000 Advanced Server
 * Microsoft Windows 2000 Advanced Server
 * Microsoft Windows NT 4.0 Service Pack 4
 * Microsoft Windows NT 4.0 Service Pack 5
 * Microsoft Windows NT 4.0 Service Pack 6
 * Microsoft Windows NT 4.0 Service Pack 6a

-



This article was previously published under Q288443



SYMPTOMS
When you upgrade a Windows NT 4.0 primary domain controller (PDC) to a Windows 2000 domain controller (DC) by using the same NetBIOS and DNS name, the Active Directory Wizard generates the following error message:

The name &quot;domain name.com&quot; is already in use on this network. Type a name that is not in use.

For example, this could occur if your Windows NT 4.0 domain name was testdomain.com and your Windows 2000 domain name was also testdomain.com.



RESOLUTION
Before you upgrade, change the NetBIOS name so that it is not the same as the Windows 2000 domain name.

Keywords: kberrmsg kbnetwork kbprb KB288443

-

[mailto:TECHNET@MICROSOFT.COM Send feedback to Microsoft]

© Microsoft Corporation. All rights reserved.