Possibly third-party app blocking registry causing the issue:

This fix worked for another member:

Feeds not updating
http://blogs.msdn.com/rssteam/archiv...-updating.aspx
--
Gistcheckin


"JPL" wrote:

> I had tried that before I made the original post.
>
> I deleted the feed files as per 5. in KB926448, (except that I did not
> bother with export/import but simply deleted all the feeds) and then
> re-subscribed. This had no effect at all, i.e. the feeds that previously
> worked worked again, the feeds that previously failed failed again.
>
> JPL
>
> "Gistcheckin" wrote:
>
> > You may have to re-subscribe to choice feeds:
> > http://support.microsoft.com/selectindex/?target=rss
> > --
> > Gistcheckin
> >
> >
> > "JPL" wrote:
> >
> > > The root cause of the problem is in the feeds, not on the PC.
> > >
> > > I had the opportunity to try these feeds on another PC and found exactly the
> > > same behaviour as on my PC.
> > >
> > > I then found some other Microsoft feeds, e.g. MSDN Visual Basic, and these
> > > worked fine, unlike all 21 of my Microsoft feeds that prompted my original
> > > post.
> > >
> > > It seems that Microsoft no longer provides any content in the "Most Recent
> > > KBs for xxx" series. A pity: I found them very useful. Links to these feeds
> > > are in place, and it is possible to subscribe to them without any apparent
> > > errors, but the feeds have no content (other than the feed title, of course).
> > >
> > > JPL
> > >
> > > "Gistcheckin" wrote:
> > >
> > > > See This Thread
> > > > http://www.microsoft.com/communities/newsgroups/list/en-us/default.aspx?&query=RSS+updates+don't+work&lang=en &cr=us&guid=&sloc=en-us&dg=microsoft.public.internetexplorer.general&p= 1&tid=22f9ab8d-84dd-47ac-8e96-cfccfcf136dc&mid=22f9ab8d-84dd-47ac-8e96-cfccfcf136dc
> > > > --
> > > > Gistcheckin
> > > >
> > > >
> > > > "JPL" wrote:
> > > >
> > > > > Thanks for your help.
> > > > >
> > > > > Yes. Yes. Yes. (Please see original post.)
> > > > >
> > > > > I do not wish to perform a browser reset for something that works properly
> > > > > in almost all circumstances, and a System Restore is absolutely out of the
> > > > > question.
> > > > >
> > > > > What is the difference between all Microsoft RSS feeds (none of them works)
> > > > > and all other RSS feeds (all of them work)?
> > > > >
> > > > > JPL
> > > > >
> > > > > "Gistcheckin" wrote:
> > > > >
> > > > > > Are RSS Feed Settings the same. Tools>Internet Options>Content
> > > > > > Tab>Feeds>Settings Button
> > > > > > Is update Automatically enabled?
> > > > > >
> > > > > > Try Browser Reset - Tools>Internet Options>Advanced Tab>Reset Button
> > > > > >
> > > > > > If none of the above works, try a System Restore to a date prior to the
> > > > > > malfunction issue.
> > > > > > --
> > > > > > Gistcheckin
> > > > > >
> > > > > >
> > > > > > "JPL" wrote:
> > > > > >
> > > > > > > My Microsoft RSS feeds, (e.g. Most Recent KBs for Access 2003), subscribed
> > > > > > > via the RSS Feed Product Index on
> > > > > > > http://support.microsoft.com/selecti...spx?target=rss
> > > > > > > are not updating, although all my other feeds are working correctly.
> > > > > > >
> > > > > > > I deleted all the files and folders in
> > > > > > > ...\Local Settings\Application Data\Microsoft\Feeds
> > > > > > > and then resubscribed to all the feeds. No change. All the feeds (i.e. all
> > > > > > > the Microsoft ones that do not work and all the others that update correctly)
> > > > > > > use the default feed settings.
> > > > > > >
> > > > > > > These feeds used to work, I think until late May this year, but now none of
> > > > > > > them does.
> > > > > > >
> > > > > > > Any ideas what the problem might be and how I can fix it?
> > > > > > >
> > > > > > > JPL