NOTE: The first argument may change but the STOP code (0x00000050) is thesame. This may occur either as an in-place upgrade of Windows NT or as anupgrade of Windows NT Workstation to Windows NT Server.
Windows NT 4.0 was reinstalled as an upgrade over an installation ofWindows NT 4.0 that had Service Pack 2 or greater installed and RemoteAccess Service (RAS) was installed.
For more information on these specific errors and their resolutions, pleasereference the following Microsoft Knowledge Base articles:
ARTICLE-ID: 162205 TITLE : "Stop 0x1E" Message Reinstalling Windows NT with SP3 and RAS
ARTICLE-ID: 162837 TITLE : Replacing TCP/IP After SP2 Causes STOP 0x00000050
If you are trying to restore the system to a bootable condition and removeService Pack 2, use the following steps:
If the partition is formatted as NTFS, install Windows NT to a different directory so the files on the partition are accessable.
If the partition is formatted as FAT, boot to MS-DOS.
Change directories to the Service Pack 2 uninstall directory:
($NTSER~1 or similar name if under DOS)
Copy all the *.sys files in the uninstall directory to the %WinRoot%\System32\Drivers of the original Windows NT directory.
Copy Win32k.sys from the uninstall directory to%WinRoot%\System32.
Copy all other files to %WinRoot%\System32.
The system should now be starting correctly. Other errors may be encountered at this point, but the system should start.
Start the Service Pack 2 update program but select to uninstall the service pack. This should bring your system back to a PRE-SP2 configuration.
If the service pack was not the source of your original problem, Microsoft suggests you re-apply the service pack, but choose NOT to make an uninstall directory in order to preserve your original Windows NT system files already contained in the previous uninstall directory.
Installing Windows NT 4.0 as an upgrade over an installation of the sameversion is not recommended or supported. If files need to be replaced, bootto MS-DOS if using a partition formatted as FAT and replace the damagedfiles, or perform a new installation of Windows NT to a different directoryso a partition formatted as NTFS can be accessed and then replace theaffected files.
An upgrade will attempt to replace files and modify the registry. This mayresult in mismatched files and/or corruption to the registry that may leavethe system unbootable. The in-place upgrade does not replace all servicepack files, thus creating an incompatible mix of service pack and non-service pack system files.
This process will NOT work if Service Pack 2 was installed more than onceand the uninstall option was selected without first uninstalling theservice pack, thus overwriting the uninstall directory. Nor will this workif the uninstall option was not selected during install of the ServicePack. In this case, a parallel install of Windows NT will be needed so atape backup of the original install can be restored.