What that means is that the program is not compatible with XP which does not use 16-bit or DOS.  Using 16-bit color is not related to the relationship between 16-bit and 32-bit programs.  Either find an XP compatible update or you won't be able to run it unless the Windows Compatibility app will allow it.  Look on Accessories/system for this shortcut and follow the instructions.

>I have started getting this error message when installing or running a .exe file:   c:\windows\system32\autoexec.net.  The system file is not suitable for running MS-DOS and Microsoft Windows applications.  Choose 'close' to terminate the application.
>
>(I should also note that the header on this error message says:  "16 bit Windows Subsystem.")
>
>
>Action I have taken:  I went to the display properties/"Settings" tab and clicked on "16 bit" color setting and tried to install my file.  Then I set it back to "32 bit" & tried to install...rebooting between each setting.
>
>My computer is:  Windows XP, Version 2002, Service Pack 1
>                 Pentium 4
>
>

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