We saw your first post. Why did you uninstall/reinstall Defender? Of
course *you* aren't fully protected now. I frankly stunned that you did
that.
--
~PA Bear

John Navas wrote:
> On Tue, 24 Jun 2008 18:27:25 -0400, "PA Bear [MS MVP]"
> <PABearMVP******.com> wrote in <OUB#ank1IHA.5472@TK2MSFTNGP06.phx.gbl>:
>
>> [Crossposted to Windows Update, WinXP General, and Security newsgroups]
>>
>> I have reproduced this problem (error 0x80070643). Users may encounter
>> this problem when updating Defender via Automatic Update, Windows Update,
>> or from within Defender (Check for updates function).
>>
>> NB: Defender will NOT be happy and its "Alert!" icon will continue to
>> appear in Notification Area until an update is successfully installed.
>> This does NOT mean that Defender is not working/protecting your machine.
>
> Not necessarily: I uninstalled and reinstalled Windows Defender in an
> attempt to fix the problem, and it's now stuck at Definition version
> 1.0.0.0 2006/01/25, so my machine isn't terribly well protected.
>
>> I have alerted MS and the Defender team to this apparent bug via private
>> channels.
>
> I'm frankly stunned that this could get released with such a clear
> problem, and that Windows Security Support still doesn't know about it
> (as of my call 2 hours ago).