This article was previously published under Q196480
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While you are running Windows Explorer, a Microsoft Office version 7.0 forWindows 95 program, or a Microsoft Office 97 program, you may receive thefollowing error message:
Explorer This program has performed an illegal operation and will be shut down.
If you then click Details, you may receive the following error message:
Explorer caused an invalid page fault in module <unknown> at:<address>
This problem can occur if all of the following conditions exist:
You installed Winzip version 6.3 or 7.0 on your Windows 95-based computer.
You installed Internet Explorer version 4.0 but did not install the Windows Desktop Update component.
Important This section, method, or task contains steps that tell you how to modify the registry. However, serious problems might occur if you modify the registry incorrectly. Therefore, make sure that you follow these steps carefully. For added protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, click the following article number to view the article in the Microsoft Knowledge Base:
322756 How to back up and restore the registry in Windows
To resolve this issue, use Registry Editor to delete the following registry key: