643 error when upgrading from Windows Vista

The problem could be that you need you to update Windows Installer:
http://www.Microsoft.com/download/en/details.aspx?displaylang=en&ID=8483

Install and after rebooting your computer, try Windows Update again.

I tried to download the files on the page of the links you provided and the downloader has indicated that none of them would work with my system. I clicked on all the links on this page indicate suitable for Windows Vista.

Tags: Windows

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