8024402c means it had trouble talking to the windows update servers. And I have always found it to be DNS related.
My fix is to have the system use the google dns servers 8.8.8.8 and 8.8.4.4
This bug is on my own ISP. When I used their DNS every single machine in my house and office would fail with this error. As soon as I changed dns servers they all worked. I tried to let my ISP know but they just ignored me lol
To make changing your DNS servers easier I made a program that will do it for you
http://www.tweaking.com/content/page/tweaking_com_change_dns_servers.htmlSo try the dns trick and see how it does

Shane