A customer had just purchased a brand new acer PC. They had just got it out of the box, but didn’t feel comfortable with the vista setup. And they also needed me to setup their new ADSL internet.
Everything goes smoothly, except when windows defender updates, it generated an error 0x8024402F.
I try windows update, and I get a very similar error: 8024402C
From experience, I know that a windows restart usually fixes defender errors, but not this time.
A quick search reveals that one option is that the internet connection is being blocked, usually by a firewall.
Well, the only firewall on the system is the vista firewall.
I disable the vista firewall, and then both updates work correctly.
After the updates, everything seems to fall into place, and vista is working normally again (even after the firewall is re-enabled).