I have a WD My Book Live which is working properly. I can access the drive through my local network. But it doesn’t show up as a storage drive under “This PC” (Windows 10). Because it doesn’t show up as a drive letter, I am unable to sync the drive with Laplink. How do I set this drive up as a drive letter under “This PC” so that I can synchronize other drives with Laplink?
Have you tried mapping the drive?
See if the following link helps.
How to map a My Cloud or NAS device on a Windows PC