Thanks for your posting here.
Yes, you need both the NT4Emulator and the NeutralizeNT4Emulator keys on
the new DC and the originally upgraded DC. You refere to the following
How to prevent overloading on the first domain controller during domain
As for the NT4Emulator and NeutralizeNT4Emulator keys, it should only be a
temporary solution. When you have sufficient Windows 2003 domain
controllers, you can remove the NT4emulator registry value on all the
Windows 2003 domain controllers or the Windows 2000/XP clients will no
longer receive group policy nor will it do Kerberos authentication.
Here are some documents may be helpful
HOW TO: Upgrade a Windows NT 4.0-Based PDC to a Windows Server 2003
Upgrading from Windows NT Server 4.0 to Windows Server 2003
Windows NT Server 4.0 Upgrade Guide
Have a nice day!
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Subject: NT4 to W2k3 Upgrade
Date: Wed, 10 Nov 2004 13:30:00 -0000
I will be upgrading our NT4 PDC to W2K3 AD.
I have seen in previous threads "01/112004-15:37 - Running DCPromo on
Server after NT4 in-place upgrade" that registry key changes may be
in relation to the new W2K3 DC.
What needs to be changed