Q63359 Unrecoverable Application Error in Windows 3.00
Microsoft Windows 3 Retail Product (WIN3)
3.00
MS-DOS

Summary:

This article contains information on potential causes of the Microsoft
Windows version 3.00 error message:

   Unrecoverable Application Error
   Terminating current application

This error occurs only in standard- and enhanced-mode Windows 3.00. It
indicates that a Windows application has caused a protection violation
(that is, an application has written to a memory space to which it
does not have access, potentially corrupting other code in that area
of memory).

If you receive this error, the Windows 3.00 system will be unstable
until you exit Windows, reboot the system, and restart Windows. After
one application causes such an error, memory will be corrupted. This
could cause other applications to subsequently receive the same error,
even though they are not actually the cause of the problem.

The following are possible causes for an unrecoverable application
error:

1. You are running an application that was designed for Windows
   versions 2.00, 2.03, 2.10, and 2.11 under Windows 3.00 in standard
   or enhanced mode.

   If an application has not been properly designed to function
   correctly under Windows 3.00 protected modes, it will cause an
   error. If an application is designed for Windows versions 2.00,
   2.03, 2.10, and 2.11, it will generate a dialog box when executed
   that advises you of this error. Such applications should be run only
   under Windows 3.00 real mode as the dialog box suggests.

2. You have selected an incorrect machine and/or network while using
   the Setup program.

   Some machines and networks require you to override the default
   detection made by Windows 3.00 Setup and make a specific selection.
   If the correct selection is not made, Windows will not operate
   correctly.

   Machines that must be specifically selected in Windows
   Setup include the following:

      All 80386- and 80486-based AST machines
      All 80386-based Zenith machines
      All Hewlett-Packard machines
      Everex Step 386/25
      NCR PC 386SX
      NCR PC 925
      NEC PowerMate SX Plus
      NEC ProSpeed 386
      Toshiba 1600
      Toshiba 5200

  Networks that must be specifically selected in Windows Setup include
  the following:

      3Com 3+Open LAN Manager (XNS only)
      3Com 3+Share
      Banyan VINES version 4.0
      LAN Manager versions 1.x (or 100-percent compatible)
      IBM PC LAN program

   If you did not choose your machine or network specifically during
   Setup, you should exit Windows and run the DOS version of Setup
   from the WINDOWS directory. This will allow you to make the proper
   selection without having to completely reinstall Windows 3.00.

3. You have incompatible TSRs (terminate-and-stay-resident programs)
   or unsupported network drivers in the CONFIG.SYS or AUTOEXEC.BAT
   files.

   Temporarily remove all suspect drivers and TSR programs
   to bring the system to a minimum configuration for
   testing purposes. If this eliminates the problem, then
   the problem was caused by one of the drivers or TSRs
   that was removed. Replace the removed lines one by one
   until the problem reappears, thus showing which line
   was causing the problem.

4. You have a page-mapping conflict in enhanced mode.

   This cause applies only to enhanced-mode Windows. Test the problem
   under standard mode by running Windows with the WIN /S parameter.
   If the problem does not occur in standard mode, it may be a
   page-mapping conflict in the adapter segment area of memory
   (between A000 and EFFF hexadecimal). Edit the SYSTEM.INI file with
   Notepad or SYSEDIT and insert the following line in the [386ENH]
   section:

      EMMExclude=A000-EFFF

   This will exclude the entire adapter segment from mapping. This
   line is not case sensitive. If inserting this line solves the
   problem, you may want to determine the position of all hardware
   adapters in the adapter segment and exclude them specifically
   rather than excluding the entire region. Multiple EMMExclude lines
   may be used if necessary. If you are using a Micro Channel (MCA)
   bus machine such as an IBM PS/2, you may determine the adapter
   location by booting with the machine's Reference Disk. If you are
   using a standard (ISA) bus machine, consult your adapter
   documentation and/or manufacturer's technical support service for
   information on memory locations used, if any.

5. You have the incorrect DOS version.

   Machines should have the proper DOS version for their hardware
   type. OEM (Original Equipment Manufacturer) versions of DOS such as
   COMPAQ DOS or IBM PC-DOS should not be used except on their
   respective OEM hardware platforms (that is, COMPAQ DOS only on
   COMPAQ machines, IBM PC-DOS only on IBM machines).

   On other machines, the proper DOS should be determined by the
   following rule: If the manufacturer has an OEM version of DOS, it
   should be used. If the manufacturer does not have an OEM version of
   DOS, generic Microsoft MS-DOS should be used.

COPYRIGHT Microsoft Corporation, 1990.
Updated  90/07/13 04:30