DOCUMENT:Q165542  08-AUG-2001  [winnt]
TITLE   :Service Pack 2 Uninstall Directory Gets Overwritten
PRODUCT :Microsoft Windows NT
PROD/VER:WinNT:4.0
OPER/SYS:
KEYWORDS:kbsetup

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The information in this article applies to:

 - Microsoft Windows NT Workstation version 4.0 
 - Microsoft Windows NT Server version 4.0 
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SYMPTOMS
========

If you uninstall Windows NT 4.0 Service Pack 2, the uninstall procedure may not
restore the original files.

CAUSE
=====

If you apply Windows NT 4.0 Service Pack 2 (SP2) a second time with the Create
Uninstall Directory option chosen, the uninstall procedure may not restore the
original files.

In this scenario, the pre-SP2 files in the uninstall directory may be replaced
with Service Pack 2 files already in the Windows NT directory tree. The files
are copied without warning. Future use of the Service Pack 2 uninstall feature
may copy Service Pack 2 files back into the Windows NT directory tree instead of
the original files.

RESOLUTION
==========

To maintain the state of the files prior to the first application of Service
Pack 2, use one of the following options:

 - When re-installing Service Pack 2, select "No, I do not want to create an
   Uninstall directory."

   -or-

 - Prior to re-installing the Service Pack, make a backup copy of the
   $NtServicePackUninstall$ directory. After you apply the service pack again
   and choose to create an uninstall directory, you may replace the
   $NtServicePackUninstall$ directory with the backup copy.

If you wish to save the state of the files prior to the re-application of Service
Pack 2 and use the Uninstall feature as currently designed, simply reapply
Service Pack 2 with the uninstall directory creation option enabled.

STATUS
======

Microsoft has confirmed this to be a problem in Windows NT version 4.0 Service
Pack 2. We are researching this problem and will post new information here in
the Microsoft Knowledge Base as it becomes available.

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Keywords          : kbsetup 
Technology        : kbWinNTsearch kbWinNTWsearch kbWinNTW400 kbWinNTW400search kbWinNT400search kbWinNTSsearch kbWinNTS400search kbWinNTS400
Version           : WinNT:4.0
Issue type        : kbbug
Solution Type     : kbpending

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