Excel or Project: GP Fault in WIN87EM.DLL

ID: Q84701


The information in this article applies to:
  • Microsoft Excel for Windows, versions 4.0, 4.0a, 5.0
  • Microsoft Project for Windows, version 4.0


SUMMARY

Random problems may occur when you run Microsoft Excel for Microsoft Windows operating environment version 3.1 on a 386-based computer with an Intel i387 math coprocessor installed.


MORE INFORMATION

The following list is not all-inclusive. Since this problem is related to timing conditions, a wide and unpredictable variety of symptoms may be experienced. Following are some of the more common problems:

  • A General Protection Fault occurs in WIN87EM.DLL


  • When exiting Microsoft Excel, Windows exits to the MS-DOS prompt


  • Starting Microsoft Excel results in a General Protection Fault in an unknown module


  • Solver reports a hardware error with floating point calculations


  • Crosstabs fails in the middle of a calculation


These problems have all been traced to a timing problem between the WIN87EM.DLL and certain Intel i387 math coprocessors. There is a new version of WIN87EM.DLL that corrects this problem.

How to get the new version of this file

This file is available through any of these sources:

  • Intel bulletin board service at (503) 645-6275.


  • The Microsoft Download Service (425) 936-6735, in the APPNOTES Section.


To get to the APPNOTES section, choose the FILES section, the the WINDOWS section, then to APPNOTES.

The filename to download is: WIN87EM.EXE.

-CompuServe, by doing the following:
  1. At the ! prompt, type GO MSEXCEL.


  2. Choose LIBRARIES.


  3. Choose LIBRARY 3.


  4. Download WIN87EM.DLL.


Additional query words: GP Fault GPF win87emm invalid register ID

Keywords :
Version : 4.00 4.00a 5.00
Platform : WINDOWS
Issue type :


Last Reviewed: March 24, 1999
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