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Have you tried the suggestions on the Windows Update Troubleshooter?
Link to: http://v4.windowsupdate.microsoft.com/troubleshoot/
Search for the error number on the page...Have mentione dthe resolution
below
Problem Description:
This problem occurs when you are trying to scan for updates. When you scan
the machine for updates, and then click on one of the active links in the
left pane, the installation process does not complete.


Resolutions:
This behavior indicates that the scan process encountered an error it could
not recover from. You may be able to determine the specific error by
looking in the Windows Update.log file, located in the Windows folder on
Windows XP, Windows 98, and Windows Millennium Edition. The folder is
located in the Winnt folder on Windows 2000.  

Temporarily disabling antivirus and firewall programs while you use Windows
Update may solve this problem. Be sure to enable them again when you
complete the update process.

You might also be able to resolve this issue by deleting all of the content
in Program Files\Windowsupdate and Program Files\Windowsupdate\V4 except
for the iuhist.xml file located in Program Files\Windowsupdate\V4.
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Issue Applies To:
Windows 2000
Windows XP


Let us know the results.

regards
Sree Karunakaran

This posting is provided ?AS IS? with no warranties, and confers no rights.

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