Microsoft KB Archive/175476

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BUG: DuplicateHandle for Console Handles Ignores Inherit Param


The information in this article applies to:

  • Microsoft Win32 Application Programming Interface (API), used with:
    • the operating system: Microsoft Windows NT, versions 3.5, 3.51, 4.0


Console handles created with the DuplicateHandle() API do not receive the inherit attribute specified in the DuplicateHandle() call. This applies to console handles originally created with the CreateFile() API.


When duplicating console handles, DuplicateHandle() does not give the resulting handle the inheritance parameter specified in the call. Instead the inheritance property of the parent handle is passed on to the created handle.


To create a console handle with a desired inherence, you can call CreateFile() multiple times. Each call creates a handle with the inheritance specified in the security attributes structure passed in the CreateFile() call.


Microsoft has confirmed this to be a bug in the Microsoft products listed at the beginning of this article.

Additional query words:

Keywords : kbAPI kbConsole kbKernBase kbDSupport kbGrpDSKernBase
Issue type : kbbug
Technology : kbAudDeveloper kbWin32sSearch kbWin32API

Last Reviewed: October 23, 2000
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