Microsoft KB Archive/296579

= You receive an &quot;Unpacking Vmm32.vxd, library invalid or wrong version&quot; error message when you start Windows 98 =

Article ID: 296579

Article Last Modified on 1/31/2007

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APPLIES TO


 * Microsoft Windows 98 Second Edition
 * Microsoft Windows 98 Standard Edition

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This article was previously published under Q296579



If this article does not describe the error message that you are receiving, view the following Microsoft Knowledge Base article to view more articles that describe error messages:

315854 Windows 98 and Windows Me Error Message Resource Center



SYMPTOMS
When you start Microsoft Windows 98, you may receive an error message similar to the following:

unpacking Vmm32.vxd, library invalid or wrong version

c:window\system\vmm32\vmm.vxd failed packing vmm32.vxd

library is invalid



CAUSE
This behavior can occur because of an improperly written statement in the Autoexec.bat .file



RESOLUTION
To resolve this issue, follow these steps:  Restart your computer: Press and hold down the CTRL key until you see the Windows 98 Start menu, and then click Safe Mode Command Prompt Only. Type each of the following lines, and press ENTER after each line

c:

cd\

edit c:\autoexec.bat

where  is the name of your Windows folder. Disable the following lines in the Autoexec.bat file by typing rem at the beginning of each line:

if not exist %winbootdir%\system\vmm32o20 copy %winbootdir%\system\vmm32.vxd %w

devlib -u vmm32.vxd

replcldr %winbootdir%\system\vmm32\vmm.vxd %winbootdir%\system\vmm32.vxd

devlib -p vmm32.vxd

For example, when you are finished, the preceding lines should appear as follows:

rem if not exist %winbootdir%\system\vmm32o20 copy rem %winbootdir%\system\vmm32.vxd %w

rem devlib -u vmm32.vxd

rem replcldr %winbootdir%\system\vmm32\vmm.vxd %winbootdir%\system\vmm32.vxd

rem devlib -p vmm32.vxd

 Press ALT, press F, and then press S to save your changes. Press ALT, press F, and then press X to exit the Autoexec.bat file. Restart your computer.</ol>

Additional query words: vmm32

Keywords: kberrmsg kbprb KB296579

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