Why can't I add a Windows NT 4.0 BDC to my Windows 2000 domain?

A. Although Windows 2000 supports Windows NT 4.0 BDCs, you’ll run into problems if you try to create an NT 4.0 BDC machine account. You’ll receive the error message The Machine Account for This Computer either does not exist or is inaccessible. If you try to use Srvmgr to add the computer account from an existing Windows NT 4.0-based BDC, you’ll receive the error message The Network Request is not supported.

Your Win2K-based PDC will log the following error message.
Source: SAM<br>
EVENT ID: 12298<br>
DESCRIPTION:The Account "COMPUTER$" Cannot be converted to be a domain controller account as its object class attribute in the directory is not a computer or is not derived from a computer. If this is caused by an attempt to install a pre-Windows 2000 Domain, then you should recreate the account for the domain controller with the correct object class.

To work around this problem, use Win2K’s Srvmgr tool to create the account.

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