I'm not sure whom I'm replying to
but this answer relates to everyone. I noticed this by accident 2 weeks ago: The C:\windows\system32\drivers\ directory and its etc subdirectory.
I get conflicting lists of what files I have. (When I was looking for the best file manager, I tried several, and I'm glad I didn't delete any.)
Total Commander, Multi-Commander, XYplorer, and Search Everything show that all the files expected to be there are there.
Free Commander, Q-Dir, xplorer2, and PowerDesk 9, show that 412 of 419 are missing, compared to Total Commander and compared to the clone partition (E:).
Also, when I was in one editor, I forget which, and I tried to Save As a file under another name, I navigated to the C:\windows\system32\drivers directory, and there was no etc subdirectory to put the file in!!!!
If it's a question of 64 vs. 32 bit, all I can say is I have win10-64 bit and in every case where I saw two versions of the program, I chose the 64-bit version. Maybe some of these programs dont' actually ave a 64-bit version when they need one?
If that's the reason. Is it?