Can you please tell me what camera model and firmware version you are using? I've tried getting SMB share working on Windows10 without any success with a 2CD2385 and 2CD2335 both on firmware 5.5.51 and 5.5.0 respectively. I had them both working with Windows 7 Pro but needed to upgraded to Windows 10 for another reason. Since going to Windows 10 I can't get NetHDD working from the camera interface. I have turned off the firewall, allowed public sharing and disabled password access all just to try and make it work again. But nothing. When I try to "Test" the settings I always get the following error "Mounting to NAS server failed. Invalid directory or incorrect user name/password" which pretty much means it could be anything! I know all the parameters are correct therefore I can only imagine there is something in Windows 10 that stops the shares being seen by the cameras.