Knowledge Base

BUG: DuplicateHandle for Console Handles Ignores Inherit Param

Article ID: 175476

Article Last Modified on 11/21/2006

Microsoft Win32 Application Programming Interface, when used with:
- Microsoft Windows NT 4.0
- Microsoft Windows NT 3.51 Service Pack 5
- Microsoft Windows NT 4.0

This article was previously published under Q175476

SYMPTOMS

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.

CAUSE

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.

RESOLUTION

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.

STATUS

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

Keywords: kbbug kbapi kbconsole kbkernbase kbpending KB175476