The solution is simple to activate / disable the Navigation Pane with the Folder Tree in Windows 10 Explorer!
Please start the MS Explorer, for example with the key combination [Windows Logo] + [E] then click the View tab and enable the navigation pane. (... see Image-1)
Depending on your preference and operation can display or hide the directory structure at any time!
See also: || Full path in the Explorer title bar || Home directory in Windows Explorer 10 || || default printer settings
FAQ 76: Updated on: July 1th 2015 21:53