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I cannot upgrade my 4.0 NT installation with the NT 4.0 upgrade CD.
John Savill
January 8, 2000
1 Min Read
A. A. Microsoft have confirmed this to be a problem with the software, and more information can be found in knowledge base article q154538 at http://support.microsoft.com/support/kb/articles/q154/5/38.asp .
A workaround is available, as the setup procedure checks the registry entry HKEY_LOCAL_MACHINESOFTWAREMicrosoftWindows NTCurrentVersionCurrentVersion for the version number, and only upgrades if the version is 3.1 ,3.5 or 3.51. You can therefore edit this entry and change the current version number
Start the registry editor (regedit.exe)
Move to HKEY_LOCAL_MACHINESOFTWAREMicrosoftWindows NTCurrentVersion
Double click on CurrentVersion that is in the right hand pane
Change 4.0 to 3.5 and click OK
Close the registry editor
You should now be able to upgrade.
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