Emma,
Thanks for your response but that didn't work.
To answer your first question...
I have all of my files in "Downloads", so this is where the problem occurs. There is no pattern to when it will happen. I will open a folder and the files will be listed correctly (sort by 'none'). The next time I open the folder, it might be sorted by date. This changes constantly. It happens on and off in all the folders.
Some of the steps you gave me don't match what I'm seeing on my computer. I am going to tell you what I see in response to your steps. Read on...
Your step 2:
Step 2: Click View, select Group by, and choose None, then click View again and select Options.
What I see: I have to right click in an open area to see the Group by options. That is not available under "View".
Your step 4:
Step 4: In the same View tab, make sure Remember each folder’s view settings is checked, then click OK
What I see: "Remember each folder's view settings" is NOT anywhere in that list, so I can't check it. I looked everywhere and I can't find that option.
To sum this up, after I attempted to do your steps, the problem still exists.