It's related to the computer, wired or wireless
I've tried both, and the same thing happens on either computer.
Running the spyware/malware scans listed above. I don't think that Windows error is worth looking into specifically, because that update problem is just one example of many where downloads hang midway through. I just thought it might provide some info as to why my computer is doing that.
It could be a program that I have on these computers called Webblocker, which is noted by a cartoon spider. Might that have something to do with it?