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:

At the ! prompt, type GO MSEXCEL.

Choose LIBRARIES.

Choose LIBRARY 3.

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