Unfortunately exactly the same problem on my Windows 10 laptop as on the Windows 7 desktop computer. I think I must be missing some obvious setting somewhere either at the Windows end or the FVP end. These seem to be the relevant FVP settings:
1. Advanced Settings > Server Management > Network Server : should it be ON/OFF ?
2. Advanced Settings > File Share > FTP Server : should it be ON/OFF ?
3. Advanced Settings > File Share > SAMBA Server : ON … obviously !
Not sure about the 1 and 2 settings. Do I need SAMBA software on the PC ?