Windows 10: How to reverse "update" changes to windows file explorer?

The latest "update" changed the structure of File Explorer so it is not possible to open up subfolders on the left side, only on the right side. This is super annoying! and it is more difficult to reorganize subfolders. Is there a way to reverse this unwelcome change?

:)

 

Windows 10 Tweaks

Pressing “Windows+Pause Break” (it’s up there next to scroll lock) opens the “System” Window.

Windows 10: In the new version of Windows, Explorer has a section called Quick Access. This includes your frequent folders and recent files. Explorer defaults to opening this page when you open a new window. If you’d rather open the usual This PC, with links to your drives and library folders, follow these steps:

• Open a new Explorer window.
• Click View in the ribbon.
• Click Options.
• Under General, next to “Open File Explorer to:” choose “This PC.”
• Click OK

credit to Lifehacker.

 

Can't unpin dead link to D:\ from File Explorer - Taskbar & Start Menu

Mouse buttons haven't been reversed, and they work fine in all other contexts (including other items on this very same pinned list in File Explorer).

- - - Updated - - -

Also want to add:

I've attempted all the methods of unpinning that are listed in this tutorial:
Pin or Unpin Items on Jump Lists in Windows 10

 

Windows Explorer Replacement?

I don't use Internet Explorer, I meant the thing where you can look at files etc. Hotkey Windows+E. Maybe it's the wrong name in english though. *Stick Out Tongue