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Microsoft KB Archive/104199

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Knowledge Base

AUTOEXEC.BAT Is Read by Windows NT

Article ID: 104199

Article Last Modified on 10/31/2006


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

This article was previously published under Q104199


The AUTOEXEC.NT file incorrectly states that the AUTOEXEC.BAT file is not used to initialize environment variables under Windows NT. This is not true. The following is a section taken from the AUTOEXEC.NT:

   REM AUTOEXEC.BAT is not used to initialize the MS-DOS environment.
   REM AUTOEXEC.NT is used to initialize the MS-DOS environment unless a
   REM different startup file is specified in an application's PIF.

When a User logs on, the Path and Set commands to add environment variables from the AUTOEXEC.BAT file are appended to the Windows NT path and environment for the Command Prompt and any Virtual MS-DOS Machines (VDMs). By default, AUTOEXEC.NT and CONFIG.NT are also read each time you start an MS-DOS application.

NOTE: Country, Device, Dos, Fcbs, Files, Install, Loadhigh, Rem, Shell, and Stacks are all supported commands in CONFIG.NT. Any commands in CONFIG.NT that are not supported are ignored. Also, any device drivers which attempt to directly access hardware will not operate correctly in Windows NT.

Additional query words: prodnt

Keywords: KB104199