Microsoft KB Archive/130712

= PRB: Win32s Errors During Visual FoxPro Installation =

Article ID: 130712

Article Last Modified on 2/11/2000

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APPLIES TO


 * Microsoft Visual FoxPro 3.0 Standard Edition

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This article was previously published under Q130712



SYMPTOMS
When installing Visual FoxPro version 3.0, you may see the following message:

Win32s error

Improper installation

Win32s requires w32s.386 in order to run

Reinstall win32s



CAUSE
This is not a Win32s problem. It is related to a missing Device=*vmcpd line in the 386Enh section of the SYSTEM.INI file. This line provides a virtual device driver for math coprocessors.



WORKAROUND
Add this line:   Device=*vmcpd to the 386ENH section of the SYSTEM.INI file, and re-run setup.



STATUS
Microsoft is researching this problem and will post new information here in the Microsoft Knowledge Base as it becomes available.



MORE INFORMATION
A virtual device driver (VxD) is a 32-bit, protected-mode, dynamic-link library that manages a system resource, such as a hardware device or installed software so that more than one application can use the resource at the same time. Virtual devices work in conjunction with Windows to process interrupts and carry out I/O operations for a given application without disrupting how other applications run. A virtual device is required for any hardware device that has settable operating modes or retains data over any period of time. In other words, if the state of the hardware device can be disrupted by switching between multiple applications, the device must have a corresponding virtual device. The virtual device keeps track of the state of the device for each application and ensures that the device is in the correct state whenever an application continues.

Additional query words: coprocessor VFoxWin

Keywords: kbsetup KB130712

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