JSI Tip 0189 - WinNT 4.0 Upgrade CD Will Not Upgrade WinNT 4.0.

In KB article Q154538 Microsoft asserts that a "WinNT 4.0 Upgrade CD Will Not Upgrade WinNT 4.0". I have had some success by first editing:

HKey_local_Machine/Software/Microsoft/Windows NT/CurrentVersion

and changing CurrentVersion to 3.5.

Also edit:

Hkey_Local_Machine\System\Setup\SystemSetupInProgress

Double Click SystemSetupInProgress and set it to 0. Do the same for:

Hkey_Local_Machine\System\Setup\UpgradeInProgress


NOTE:It is best to uninstall SP2 or SP3 prior to an update install. If you have RAS installed you must uninstall the SP. If you can not uninstall, then:

expand <cd-rom>:\i386\tcpip.sy_ %systemroot%\system32\drivers\tcpip.sys prior to doing the update install. The note is also applicable to installing RAS after SP2/SP3.



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