Have you updated your Windows 10 PC with ALL of the latest Windows 10 updates?
Are you running a third party Firewall software program? Or have you modified the Windows Firewall to block local network access to the My Cloud? Have you enabled NetBIOS over TCP/IP in Windows 10? Have you enabled local network sharing within Windows 10? Have you installed all of the latest Windows 10 updates?
See the link I posted previously that has this and other Windows 10 suggestions when one has issues accessing the My Cloud under Windows 10.
https://community.wd.com/t/compilation-of-windows-10-methods-steps-and-solutions/142576
