Is it possible to create a local URL reference to privately shared folder files in Dropbox on Windows computers?
As an example, with Outlook, you can register Outlook as a URL Protocol in Windows and create links like the ones described in the following similiar Outlook article:
https://www.davidtan.org/create-hyperlinks-to-outlook-messages-folders-contacts-events
So for example, create a Dropbox URL like...
dropbox:Shared folder\document.doc
..and the end user would open the said file with whatever application they have registered with, in this example, Word.
Regards,
Anthony