How to fix error message in MS DOS or 16-bit Windows® based program?

Error messages in MS DOS or 16-bit Windows® programs


MS DOS short for Microsoft® Disk Operating System is an operating system for x86-based personal computers. It was the most commonly used member of the DOS family of operating systems, and was the main operating system for personal computers during the 1980s up to mid 1990s. Issues with the OS:





  • Error Messages

  • Restoring the missing files

  • Essential steps to be taken for error messages



Error Messages



If you try to start or install an MS-DOS-based or a 16-bit Windows®-based program on your Windows® XP-based computer, you may receive an error message similar to one of the following:


16-bit MS-DOS Subsystem path to the program that you are trying to start or install C:WindowsSystem32config.nt The system file is not suitable for running MS-DOS and Microsoft® Windows® applications. Choose 'Close' to terminate the application.


You may encounter other similar error messages, but with different file names config.nt and Autoexec.nt. This issue may occur if one or more of the following files are missing or damaged:


Config.nt

Autoexec.nt

Command.com



Restoring the missing files



To restore these files, download the above three files from the Internet. unzip and copy the missing file(s) to WindowsSystem32 folder.


This issue can also be caused due to a Trojan (may be TrojanDownloader.Win32.Dia.a) which may have damaged any of the three files indicated above.



Essential steps to be taken for error messages


Clean-up the Windows® startup applications. Reboot and then run a full system virus scan with updated definitions. If you are unable to run antivirus program locally, use the online virus scan services. Re-create the three files mentioned above.


Run a scan from Safe Mode with fully updated antivirus reference files. Additionally, scan with Ad-aware, SpyBot, and CWShredder. Update Ad-aware, SpyBot while in Normal mode. Restart Windows® in Safe Mode to successfully scan and remove adware, Trojan etc.




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