What specific error message are you receiving in Windows 10 when you attempt to access the My Cloud?
If Windows 10 isn’t properly configured one may have trouble accessing or seeing the My Cloud on their local network. Make sure Windows is using the same workgroup name as the My Cloud and that both the Windows computer and My Cloud are using the same IP address range (example: 192.168.1.x). The following post has some more information on things to check in Windows 10, particularly Windows 10 Specific Method 1 through Windows 10 Specific Method 5.