He even checked "thing A" and "thing B" which "looked fine", but it still "didn't work". A and B had absolutely nothing to do with each either (they solve completely different problems).
I had to ask multiple times what exactly he was trying to do and what exactly he was experiencing.
I've even had "web devs" shout there must be some kind of "network problem" between their workstation and some web server, because they were getting an http 403 error.
So, yeah. Regular users? I honestly have 0 expectations from them. They just observe that the software doesn't do what they expect and they'll complain.