Microsoft KB Archive/933339

= The version number of the Mfc42u.dll file is not updated when you apply security update MS07-012 =

Article ID: 933339

Article Last Modified on 10/11/2007

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APPLIES TO

 Microsoft Windows Server 2003 SP1, when used with:  Microsoft Windows Server 2003, 64-Bit Enterprise Edition

 Microsoft Windows Server 2003, Enterprise Edition for Itanium-based Systems  Microsoft Windows XP Professional x64 Edition

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SYMPTOMS
When you apply security update MS07-012, the version number of the Mfc42u.dll file is not updated. The Mfc42u.dll file is located in the following folder:

%windir%\System32



CAUSE
This issue occurs because the updated version of the Mfc42u.dll file that is included for the Microsoft Windows operating systems that are listed in the &quot;Applies to&quot; section does not use a newer version number. The older version number (6.5.9146.0) is used on these Windows operating systems.

Note The Mfc42u.dll file may also be located in folders other than the %windir%\System32 folder. For example, the Mfc42u.dll file may also be located in the following folders:

%windir%\syswow64

%windir%\winSxS

The version number for the Mfc42u.dll file in these folders is correct.

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WORKAROUND
The security update for the Windows operating systems that are listed in the &quot;Applies to&quot; section is correctly offered on the Windows Update Web site. The update is offered despite the incorrect version number. Therefore, no additional action is required.

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MORE INFORMATION
For more information about security update MS07-012, click the following article number to view the article in the Microsoft Knowledge Base:

924667 MS07-012: Vulnerability in Microsoft Foundation Classes could allow for remote code execution

Additional query words: security update patch bulletin mfc mfc42u.dll vulnerability

Keywords: kbtshoot kbsecurity kbprb kbpubtypekc kbexpertiseinter kbexpertisebeginner KB933339

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