Yes I am aware of that, Brian. However, most of the posts that I have seen were using the free version of AVG. I have the fully paid up version and it works fine on two other computers.
More than that, among all my tests to see if I could sort out problems the WD computer, I transferred WD to a little Notebook computer that I have. It worked fine there, alongside AVG over four days. That is not to say AVG is OK when run on the usual WD computer. And, maybe, four days was not long enough as a test? Maybe, too, on the WD computer alone, there is a conflict between AVG and WD/Explorer that does not occur on most other computers? We'll see.
I'm not happy though, not having any protection just now other than Windows Firewall. However, I don't have Outlook or similar program set up on this computer, so no email comes and I'm avoiding surfing the net except for a few known safe websites, like this one.
Cheers,
Rick