Microsoft KB Archive/106077

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BUG: System-Wide WH_DEBUG Hook Causes a GP Fault


The information in this article applies to:

  • Microsoft Windows Software Development Kit (SDK)


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


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.


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

Last Reviewed: November 5, 1999
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