Question : Windows Update Blocked

I have a problematic computer on my hands that will not reach windows update. It is XP SP3. I have already run Maleware Antibytes and SAV10 on it several times to clean crap off of it. Both programs report it is clean, but I still cannot reach windowsupdate. Any ideas?

Answer : Windows Update Blocked

Try TdssKiller
http://support.kaspersky.com/viruses/solutions?qid=208280684

If still no luck run Combofix. Post log here
http://www.bleepingcomputer.com/combofix/how-to-use-combofix