You receive an error message when you try to install the MS04-016 security update on a Windows XP-based computer

Support for Windows XP has ended

Microsoft ended support for Windows XP on April 8, 2014. This change has affected your software updates and security options. Learn what this means for you and how to stay protected.

This article has been archived. It is offered "as is" and will no longer be updated.
Symptoms
You receive the following error message when you try to install the Windows XP security update that is described in Microsoft Security Bulletin MS04-016 on a Windows XP-based computer:
KB839643 Setup Error
Setup cannot continue because one or more pre-requisites required to install KB839643 failed. For More details check the Log File C:\WINDOWS\KB839643.log
The KB839643.log file contains the following text:
SOFTWARE\Microsoft\DirectX\Version is Not Equal To Specified Value
The security update that is described in Microsoft Security Bulletin MS04-016 is named WindowsXP-KB839643-x86-ENU.exe.
Cause
This behavior occurs if you upgraded the version of DirectX that is included with Windows XP to a later version. For example, the version of DirectX that is included with Windows XP is DirectX 8.1. If you upgraded DirectX to version 9.0, and then you try to install the Windows XP-version of the MS04-016 security update that is listed in the "Affected Software" section of the MS04-016 security bulletin, you receive this error message.

If you are not sure which version of DirectX is installed on your computer, click Start, click Run, type dxdiag, and then click OK. The version of DirectX that is installed on your computer appears under System Information. If DirectX 9.0, DirectX 9.0a, or DirectX 9.0b appears next to DirectX Version, perform the procedure that is described in the Resolution section to install the correct security update.
Resolution
To resolve this behavior, download and install the security update for DirectX 9.0 that is listed in the "Affected Components" section of the MS04-016 security bulletin. Alternatively, you can download and install the file that is included in this section.

The following file is available for download from the Microsoft Download Center:
DownloadDownload the DirectX90-KB839643-x86-ENU.EXE package now.
Status
This behavior is by design.
References
For more information about the MS04-016 security update, visit the following Web site:
Properties

Article ID: 870560 - Last Review: 01/12/2015 23:48:03 - Revision: 2.0

Microsoft Windows XP Home Edition, Microsoft Windows XP Professional, Microsoft Windows XP Tablet PC Edition, Microsoft Windows XP Media Center Edition 2005 Update Rollup 2

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