Microsoft KB Archive/84701

{|
 * width="100%"|

Excel or Project: GP Fault in WIN87EM.DLL

 * }

-

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 :

Technology :