Problem to mount nfs share un windows 10

[giobaxx]

Se started to have problem to mount an nfs share on a Windows 10 client. We mount the share with a script using the dos command net use now the Mountain fails with "System error 67 has occurred. The network name cannot be found".
the storage Is in the same subnet of the client and we mount via ip address.

Wha can be happened,? A Windows or Qnap update can have broke something?

Sorry for my english and thanks for any help

A.