WIN87EM.DLL GP Faults with Intel 80387

 Last reviewed: July 29, 1996
Article ID: Q85100
The information in this article applies to:
  • Microsoft Windows operating system versions 3.1, 3.11
  • Microsoft Excel for Windows, version 4.0

SYMPTOMS

A timing problem with some 80387 Intel math coprocessors causes general protection (GP) faults in WIN87EM.DLL or causes applications that make use of the coprocessor (such as Microsoft Excel, CorelDRAW, Lotus 1-2-3, Quicken, AMI Pro, After Dark, and WordPerfect 6.0) to experience other errors when you run applications under Windows 3.1.

WORKAROUND

To work around these problems, obtain an updated version of WIN87EM.DLL, which adjusts for the timing problem. The updated file is available in Application Note "WW0548: WIN87EM.DLL Patch for Intel 80387." For information about obtaining this Application Note, query on the following words in the Microsoft Knowledge Base: 

   ww0548 and appnote

MORE INFORMATION

For more information on how Microsoft Excel is affected by this problem, query on the following words in the Microsoft Knowledge Base: 

   intel floating win87em.dll
CorelDRAW, Quicken, AMI Pro, Lotus 1-2-3, WordPerfect, and After Dark are manufactured by vendors independent of Microsoft; we make no warranty, implied or otherwise, regarding these products' performance or reliability.

KBCategory: kbtool kbfile kbappnote
KBSubcategory:
Additional reference words: appnote 3.10 gpf GP Fault 4.00 Invalid
Register
ID win31

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Last reviewed: July 29, 1996
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