Microsoft KB Archive/106077

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BUG: System-Wide WH_DEBUG Hook Causes a GP Fault

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Q106077

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The information in this article applies to:


 * Microsoft Windows Software Development Kit (SDK)

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SYMPTOMS
Installing a system-wide hook of WH_DEBUG type causes a general protection (GP) fault in the Windows SDK version 3.1.

CAUSE
WH_DEBUG hooks are called before calling any other hooks in the system. The bug occurs if at least one system-wide hook is present in the system. (Shell installs one such system-wide hook.) In the process of reporting the system-wide hook to the debug hook, the GP-fault occurs.

STATUS
Microsoft has confirmed this to be a bug in Microsoft Windows version 3.1. This problem is scheduled to be corrected in the next version.

Additional query words:

Keywords : kb16bitonly kbHook kbGrpDSUser kbOSWin310bug

Issue type : kbbug

Technology : kbAudDeveloper kbSDKSearch kbWinSDKSearch