I have the same issue and please realize, we are not that dense. No matter
how many times or how I initiate the check for updates I continually receive
the "There are no new definitions available to download for Windows
Defender." message. Windows Defender will not start back up. I personally
am running Vista Ultimate x64.

"Jon" wrote:
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>
>
> "Anders Jensen" <anders@live.com> wrote in message
> news:B7612DDC-5459-4C74-9100-BD6E2AB1E8C4@microsoft.com...[color=green]
> > Yeah, but its keeps saying "Check for new definitions"
> >
> > /Anders
> >[/color]
>
> That's what you need to do then - Check for new definitions, or in other
> words get the updates for it...
>
> Open up the main Defender program,
>
> Start > Type 'defender' > Click on 'Window Defender' (may have to
> right-click and choose 'Run as administrator' )
>
> and click on the button 'Check for new definitions', or words to that
> effect.
>
> You can also click the down arrow to the right of the ? at the top and
> choose 'Check for updates'
> Make sure you're connected to the Internet.
>
> --
> Jon
>
>[/color]