Error When EMS Memory Is Configured for MS-DOS App in .pif File

Article translations Article translations
Article ID: 196875 - View products that this article applies to.
This article was previously published under Q196875
This article has been archived. It is offered "as is" and will no longer be updated.
Expand all | Collapse all


You may receive the following error message after you modify the custom configuration settings for an MS-DOS or Win16 application:

%systemroot%\System32\Config.Nt. The system file is not suitable for
running MS-DOS and MS Windows applications.
This error occurs when a .pif file is used to establish EMS memory and a custom Config.nt and Autoexec.nt are specified in the PIF file. Either the application will use the default configuration files in the %SystemRoot%\System32 folder, if they exist, or it will generate the error message listed above. Settings in the custom configuration files in a folder other than %SystemRoot%\System32 will not be used if EMS is specified in the .pif settings.


The location of the custom configuration files is lost when EMS memory is established. The default configuration file location is used.


To resolve this problem, obtain the latest service pack for Windows NT 4.0 or the individual software update. For information on obtaining the latest service pack, please go to:
  • Windows Service Pack Center -or-

  • 152734 how to obtain the latest windows nt 4.0 service pack
For information on obtaining the individual software update, contact Microsoft Product Support Services. For a complete list of Microsoft Product Support Services phone numbers and information on support costs, please go to the following address on the World Wide Web:


Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article. This problem was first corrected in Windows NT version 4.0 Service Pack 5.


Article ID: 196875 - Last Review: November 2, 2013 - Revision: 3.0
Applies to
  • Microsoft Windows NT Server 4.0 Standard Edition
  • Microsoft Windows NT Workstation 4.0 Developer Edition
kbnosurvey kbarchive kbhotfixserver kbqfe kbbug kbfix KB196875

Contact us for more help

Contact us for more help
Connect with Answer Desk for expert help.
Get more support from