Have you tried the following?
1. Click Start, click Run, type services.msc, and then click OK.
2. In the list of services, double-click Office Source Engine.
3. View the Startup type list.
4. If the startup type is set to Disabled, change the startup
type to Manual. To do this, click Manual in the Startup type
list, and then click OK.
5. Try to install the Office update again.
That's the first of three possible resolutions at this link:
http://support.microsoft.com/default...b;en-us;903772
"Pam H" <> wrote in message news:E6B86644-3BDA-4BD3-88E8-...
>I get this error message:
>
>
> Error Code: 0x80070643.
>
> This has been going on for the last month.
>
> Please help. Thanks,
>