Microsoft KB Archive/85100

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WIN87EM.DLL GP Faults with Intel 80387

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ID: Q85100

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The information in this article applies to:


 * Microsoft Windows versions 3.1, 3.11
 * Microsoft Excel for Windows, version 4.0

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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.

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.

Additional query words: appnote 3.10 gpf GP Fault Invalid Register ID win31

Keywords :

Version : WINDOWS:3.1,3.11,4.0

Platform : WINDOWS

Issue type :

Technology :