Hi. Sorry for replying late.
I may be able to help you, but first i need to ask few questions.
1. What is the version and edition of the operating system in the computer that is displayed as vulnerable (not the one on which the Network scan was performed, if they are 2 different devices)
2. Do you have a Guest account enabled on that computer?
Based on your screenshot the accessible directory is C:\Users, it's just not displayed very well.
If you try to connect to that vulnerable computer from another one via the Windows file Explorer, do you see the folder Users on the top level?