Hello @mngerhold,

mngerhold said:
PS I shouldn't have been surprised to find that Mr Brink has been here already: a quick search on the web found this link: Reset Open and Save As Common Item Dialog Boxes in Windows which mentions registry entries used by the various windows, and has a reg file to reset the views. I downloaded that, ran it, and indeed the reg entries did disappear. But my downloads folder still shows as grouped by date when I try to upload a file!
That is strange, a REG implementation should hold [ become static ] and NOT be reset back by the OS. Actually, that is quite worrying because it makes you wonder what else gets reset back to default. If I get time tomorrow, I will test this out on a test machine!

Nice detective work Sherlock!