Music library in Share Network/Mapped Path

Hello!
Excuse for my English.

I installed LMS on Windows 10.
I tried to add a network path for music library.
By web interfaces or control panel I can't add a network path (like \\WiredLive\MyMusic)
So I mapped it in W:\MyMusic
If I click on button to choose the path I can't see the W drive.
If I write directly in inpute text, LMS doesn't find any file (and Music Folder on web interface is empty)

I installed LMS 7.7, so I replace it with 7.9.
Same thing.

How can I do?

Thanks.