XP SP3 broke Windows Update
More precisely:
IE7 install breaks Windows and Microsoft Update after install of SP3 on a clean OS install of XP SP2
Fix is here:
http://download.windowsupdate.com/WindowsUpdate/redist/standalone/
7.0.6000.381/WindowsUpdateAgent30-x86.exe
From CMD prompt:
net stop wuauserv
“%userprofile%\Desktop\WindowsUpdateAgent30-x86.exe” /wuforce (don’t forget the quotation marks)
net start wuauserv
http://msmvps.com/blogs/markd/archive/2008/05/09
/windows-xp-sp3-breaks-windows-update.aspx
I tried this and it works.
For search engines:
Windows Update does not work after installing XP SP3
SP3 damages Microsoft Update.