Windows 10 file explorer won't rename any New folder created

There is a very similar post here that was closed. The answer was not working. There is also this post that I just found documenting the issue "Unable to rename folders through Explorer in Windows 8.1"

The issue happens for any New folder created (a sub-folder in any location).

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Window's error1:

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Title: "Rename folder"

Text:

"Can't find the specified file."

"Make sure you specify the correct path and file name."

"New folder"

"Date created: dd/mm/yyyy  hh:mm"

Box: "Try Again" or "Cancel"

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If I click 'Try Again'

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Window's error2:

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Title: "Rename"

"Text:" "warning sign"

"The file or folder does not exist."

Box: OK

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Context: A W7 clean install followed by a W10 "clean option" upgrade (24 July 2016), so one year after W10 launch. Still, another of my PC with a "dirty" W10 upgrade from W7 gives the same symptoms. I fixed it but don't remember how. Particularity: logical drives/folders on both PCs manually set for the Documents, Downloads, Music, Pictures and Videos folders at different locations than Windows default. Whether relevant or not, I don't know. It is a common characteristic / difference from standard for these 2 PCs.

http://www.winhelponline.com/blog/er...rs-windows-10/ gives a solution but I am not 100% sure it is the right one, and it implies also modifying the registry.

https://www.youtube.com/watch?v=ku-jsZ7HvfA gives a solution that could be similar to the reg fix in the 1st link. I identified that some keys are the same, but not all.

I can rename the "New folder" using an old "dos" type command opening a cmd window. That works fine. (e.g. in cmd, type H: (if H: is the logical drive on which it happens); cd "your folder_name" (reiterate if required); dir (to know if your "New folder" is there); ren "New folder" test1 (to rename your new folder to 'test1'); exit (and scream hallelujah))

Before touching the registry, would anyone with W10 insight know if these registry fixes make sense. I don't know the rationale which makes me uneasy; I am a mere user. Yes I could make backups & try but, even if it works now, I could still find out later that these fixes are damaging something else.

Thanks

acontrario Brussels