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Microsoft KB Archive/101657

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Knowledge Base


Duplicated Files in Windows NT System Subdirectories

Article ID: 101657

Article Last Modified on 11/1/2006



APPLIES TO

  • Microsoft Windows NT Advanced Server 3.1
  • Microsoft Windows NT Workstation 3.1



This article was previously published under Q101657

SUMMARY

Windows NT Setup installs a small group of files in more than one location. The files are present in both the System Root (%systemroot%) directory and in the %systemroot%\SYSTEM32 directory, or in both the %systemroot%\SYSTEM32 and %systemroot%\SYSTEM directories. Some examples of these files include TASKMAN.EXE, VER.DLL, and WRITE.EXE.

The Windows NT system executable files must be in the SYSTEM32 directory for security reasons. The SYSTEM32 directory is first on the search path; if someone placed a dangerous version of a system file (such as a buggy copy of WRITE.EXE, for example) into another directory on the path, the version shipped with the system runs instead. Some programs must be in the System Root or in the SYSTEM directory for compatibility with 16-bit Windows 3.1. For example, some application setup programs create a program item and set its command line to "%systemroot%\WRITE.EXE README.WRI". In this case, WRITE.EXE must be in the System Root directory. A more obscure example occurs when the Setup program for an application does not run unless it can find TASKMAN.EXE in the System Root directory. This Setup program should call GetWindowsDirectory() to find TASKMAN.EXE; why it does not is not known.

The duplicate files are as follows:

%systemroot% and %systemroot%\SYSTEM32
--------------------------------------

   NOTEPAD.EXE
   TASKMAN.EXE
   WRITE.EXE

%systemroot%\SYSTEM and %systemroot%\SYSTEM32
---------------------------------------------

   COMMDLG.DLL
   MMSYSTEM.DLL
   MMTASK.TSK
   OLECLI.DLL
   OLESVR.DLL
   SETUP.INF (identical name, different content)
   SHELL.DLL
   VER.DLL


Additional query words: prodnt

Keywords: kbsetup KB101657