From: fddc379 on
Go to the Control Panel, click on User Accounts and turn it off. You'll have
to restart your computer, then install the updates. Once installed, go back
to the Control Panel and turn the User Accounts back on. It has worked for me
every time an Office 2007 update has failed.


"kk-emt72" wrote:

> This is the error message it gives me.....10 of these are optional updates,
> the other 2 say critical...
>
>
> Error(s) found:
> Code 646 Windows Update encountered an unknown error. (Get help with this
> error.)