Have just set up My Cloud EX4, and updated to the latest firmware. My Windows 8.1 machine and the EX4 are both connected to the same switch. The Windows 8.1 system cannot see the EX4 by name, but I can access shares using the IP address. I can see other devices on the network on the Windows 8.1 system. My Windows 7 machines can all see the EX4 by name.
Thank you for your responses. It became obvious that there was a problem with the Win 8 networking as opposed to a problem with the EX4 itself. I did the following on the Win 8 system;