Microsoft KB Archive/319109

= Windows Update Site Lists Updates That You Already Installed =

PSS ID Number: 319109

Article Last Modified on 3/1/2004

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The information in this article applies to:


 * Microsoft Windows XP Professional
 * Microsoft Windows XP Home Edition

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This article was previously published under Q319109



IMPORTANT: This article contains information about modifying the registry. Before you modify the registry, make sure to back it up and make sure that you understand how to restore the registry if a problem occurs. For information about how to back up, restore, and edit the registry, click the following article number to view the article in the Microsoft Knowledge Base:

256986 Description of the Microsoft Windows Registry



SYMPTOMS
If you visit the Windows Update site for Windows XP, you may find that the list of updates includes items that you have already installed on your computer.



CAUSE
This issue may occur if the updates that you have installed on your computer have not been registered correctly.



RESOLUTION
To resolve this issue, complete the following methods in the order that they are listed

Method 1: Reinstall the Update
Download the update again:
 * 1) Click Start, point to All Programs, and then click Windows Update.
 * 2) On the Windows Update home page, click Scan for updates.
 * 3) Select the updates that you want to download (including updates that you have already installed on your computer), and then click Install now.
 * 4) Click Yes when you are prompted to install any required software or device drivers.
 * 5) Restart your computer if you are prompted.

To determine if you have resolved the issue, repeat steps 1 and 2 to confirm that the updates that you installed are listed in Windows Update. If the list of updates still includes items that you have already installed on your computer, complete with Method 2 to resolve this issue.

Method 2: Delete the Registry Key, and Then Reinstall the Update
WARNING: If you use Registry Editor incorrectly, you may cause serious problems that may require you to reinstall your operating system. Microsoft cannot guarantee that you can solve problems that result from using Registry Editor incorrectly. Use Registry Editor at your own risk.

To resolve this issue, delete the registry key that is associated with the update that you installed, and then reinstall the update:  Click Start, point to All Programs, and then click Windows Update. On the Windows Update home page, click Scan for updates. Note the number of the Microsoft Knowledge Base article (a six-digit number) that is referenced in the update that you are trying to install. Close the Windows Update home page. Start Registry Editor (Regedit.exe). Locate and double-click the following key in the registry:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Updates\Windows XP\SP 

Note For x, use the number for the next service pack. For example, if you are running Windows XP SP1, locate the SP2 key.</li> Under the SP key, locate and click the registry entry that corresponds to the number of the Microsoft Knowledge Base article (the six-digit number that you noted earlier).

For example, if the Microsoft Knowledge Base article number that you noted was &quot;810217,&quot; locate and click the following key in the registry:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Updates\Windows XP\SP1\KB810217

Note Windows XP updates may be listed in the registry with either &quot;Q&quot; or &quot;KB&quot; before the six-digit Microsoft Knowledge Base article number.</li> Click Delete on the Edit menu, and then click Yes to confirm.</li> Quit Registry Editor, and then restart your computer if you are prompted.</li> Complete Method 1 to reinstall the update.</li></ol>

Keywords: kbprb KB319109

Technology: kbWinXPHome kbWinXPHomeSearch kbWinXPPro kbWinXPProSearch kbWinXPSearch

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