We see only Windows 10 clients loosing connection to CIFS shares sporadicly. Failure means something like 'Path is not available' but network seems to be fine as only those Windows 10 client are kicked of the CIFS connection.
Failure started some Windows10 major patch release updates ago.
Ontap Version is 8.1.4P9D18 7-Mode
SMB 2.1 is disabled smb_enable_2_1 = 0
Any idea where that behaviour could result from?