There is a much deeper discussion of this same issue here: WD TV Live Streaming Media Player, Windows 10, SMB v1 network protocol - #33 by timbeaudet
The issue is that Microsoft disabled SMBv1 during those updates, and WD TV only communicates over that. There is supposedly a way to enable this feature in those versions Windows 10 by looking through the features, however I was unable to get this work. Luckily for the time being I’ve been able to revert to older versions of Windows but this is unsustainable.
