FIX: Error 643

Follow these directions:

Download and run the Windows Installer Cleanup Utility, and remove the .NET
framework 1.1 from the machine.

Download .NET framework 1.1 from the Microsoft website and install it. Follow this link to download:

Reboot your machine, then install .NET 1.1 SP1 from the Microsoft website and reboot your computer again.  Then try to take the update once again.

Follow this link to download .NET 1.1 SP1.

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