Thanks for response Maurice,
My system is set to receive all critical updates automatically and never
experienced any problems.
Here is what has happened:
A WindowsDefender icon in the system tray appeared prompting me to manually
downloaded a recommended update for Windows Defender from 1051 to 1347 but
experienced problems during downloading as my dial-up connection dropped
out.
-------------
I re-downloaded successfully but after installation the Windows Defender
window indicated: "Your definitions haven't been updated in 160 days."
------------
This couldn't be right as I am certain that v1347 automatically updated
frequently and this comment is in conflict with my Microsoft up-date
history.
Also, I was unable to update manually (clicking onto "Check Now" button) as
the button was greyed out.
--------------
Anyway, I attributed this 'hick-up' to my dropped-out dial connection during
initial download operation and decided to uninstall Windows Defender
entirely followed by turning off System Restore and scanning in safe mode
with Ad- Aware, SUPERAntiSpyware and EZ Antivirus.
All of the scans resulted okay.
---------------
After rebooting I created a new restore point and again downloaded and
installed Windows Defender. This time the Windows Defender window indicated
that: "Your definitions haven't been updated in 170 days." (Please note the
10 day difference). But I was able clicking onto the "Check Now" button
which produced a pop-up indicating: "Windows Defender was unable to complete
the update: 0x80070663. This patch package could not be opened. Verify that
the patch package exists and that you can access it, or contact your
application vendor to verify that this is a valid Windows Installer pa.
----------------------------
I then tried to remove signature file Msiexec /x
{A5CC2A09-E9D3-49EC-923D-03874BBD4C2C} but this didn't work either and
producing a pop-up window: "This package could not be opened. Verify that
the patch package exists and that you can access it, or contact your
application vendor to verify that this is a valid Windows Installer pa."
----------------------------
I posted the preceding message to
microsoft.private.security.spyware.announcements but the responses weren't
appropriate to fix my problem.
--------------------------
By googling "error 0x80070663" I came across
http://support.microsoft.com/Default.aspx?scid=kb;en-us;913754&spid=2488&sid=247
and thought that the problem might be related as I just received multiple
updates for WindowsXP, OfficeXP, Excel2002 and .NET Framework, and was
wondering if it is safe to add the missing registry items which may fix my
(WindowsDefender) problem; thence my post to this newsgroup.
Many thanks in advance for your time.
Regards,
Kayman.