MSFT Update released June 6, 2006 (sorry for the typo). Give it a shot and
see if it helps you. It is avoiding a lot of Errors that the old Windows
Update ran into.

CH

"Chad Harris" <Vista RTM is really Beta 1.net> wrote in message
news:euEzS4D%23GHA.4704@TK2MSFTNGP04.phx.gbl...[color=blue]
> *You* fix the problem. Windows Update is the old version of Update. MSFT
> Update released on June 6, 2007. They don't showcase or advertise it
> well. It has a better improved BITS--translation updates install faster
> and without many of the glitches of the old Windows Update you keep trying
> to use by default. Why Vista didn't update to MSFT Update is a great
> question. When I asked the IE team the other day in a chat, I got a
> ridiculous but typical reply lol "we have our reasons." A lot of children
> work at Redmond.
>
> MSFT Update Download/Upgrade from Well MSFT
> [url]http://update.microsoft.com/microsoftupdate/v6/muoptdefault.aspx?ln=en&returnurl=http://update.microsoft.com/microsoftupdate/v6/default.aspx?ln=en-us[/url]
>
>
> How to enable and to disable Microsoft Update
> [url]http://support.microsoft.com/default.aspx?scid=kb;en-us;901037[/url]
>
> For info on BITS see from Technet Mag:
> [url]http://www.microsoft.com/technet/technetmag/issues/2006/05/InsideMSFT/[/url]
>
> BITS
> [url]http://msdn.microsoft.com/library/default.asp?url=/library/en-us/bits/bits/about_bits.asp[/url]
>
> [url]http://search.msdn.microsoft.com/search/default.aspx?siteId=0&tab=0&query=bits[/url]
>
> CH
>
> "Rick" <rehallman@nospam.hotmail.com> wrote in message
> news:EFFB9DC8-E3AA-4664-A6A2-F567B4BC879E@microsoft.com...[color=green]
>> Windows Update stopped working back on 10/6/06 and reports the error
>> 8024400A. Windows Defender is now showing a Red Security Shield in the
>> taskbar. The built in help feature doesn't directly support this error
>> message. The closest it gets is 8024400C. Some people say that this was
>> fixed with RC2 but I don't see Microsoft offering that as a fix. I was
>> one of those who blinked and missed the release and retraction of RC2.
>> So, if RC2 is not an option then how do I fix this problem running RC1
>> Build 5728?[/color]
>
>[/color]