I had the same issue with a client's laptop, but solved it. May not work for you, but here is my procedure.
System--
Dell Latitude D830 laptop
Windows XP sp3
BIOS A15
80GB Samsung IDE HDD
4GB RAM
Broadcom NIC & WNIC
Intel mobo chipset
Intel VGA
Situation--
Could not run MS update from any of windowsupdate.microsoft.com,
www.update.microsoft.com or update.microsoft.com. Further, unable to access microsoft.com. Failed with both IE8 and Firefox 3.6.4. Various AV and badware apps came up clean after full scans of the entire drive. Ran ipconfig, repaired network connections, but it did not matter. I even updated the NIC drivers with no joy.
Read many posts on the 'net about the above dating back to 2002, but only real solutions involved a clean install of WinXP.
Solution--
I decided to do a repair install using a Dell Windows XP sp3 disc. Less painfull than a cleanout, the final extreme option, and it eradicated the issue:
- If possible, download the full Internet Explorer 8 installer beforehand.
- Make sure computer is connected to the Internet.
- Boot from the Dell WinXP sp3 CD.
- Choose to install Windows.
- After the current WinXP installation is found, select repair.
- Once WinXP was repaired, Internet Explorer was now at version 6.
- I tried to run Microsoft Windows update at this point, but now I received an error about activation keys could not be found.
- Install IE8.
- After repairing the WinXP install then upgrading to IE8, MS Win update now working properly.
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I think a freeware software util that the client used corrupted the Windows install. I have a very good idea of which program it was, based on seeing a certain free registry cleaner that was installed and the fact that the same utility caused a big network problem for another client previously.
Anyway, all's well that ends well.
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