We have an unmanaged Windows 7 Pro 64-bit client running SEP 12.1.4. We ran a manual LiveUpdate today and noticed that one of the updates was something called the "AP Portal List". I think this has something to do with SEP Browser Intrusion Prevention.
So, the issue we are trying to shoot is a problem with Windows Update that popped up after the AP Portal List update. Microsoft Update fails with either error 802440B or 80244016. We're not say that the AP Portal List update is the issue, but we're trying to rule out causes for the Microsoft Update failure. Both the 802440B error and the 80244016 error have something to do with an interruption in the internet connection. However, we can go to other websites with no problems.
The machine has been working perfectly - no other changes other than the Symantec updates. Again, not blaming Symantec, just trying to rule out potential causes.
It could just be the Microsoft update site having problems....