Same Problem here. I have 4 Computers, all Windows 10 Pro and on 3 of them I can’t get WD Access or WD QuickView to run. On all 4 I’m able to get to the Dashboard and do the Adminstration of my MyCloud EXE2 Ultra, but so far WD Access works only on one. On the others either the installation of WD Access fails (installation process looks fine, but after finishing nothing is installed) or WD Access gets installed but does not work. I disabled all Firewalls, I make sure that I do see the My Cloud EX2 under “Networks Devices / Storage”, but WD Access does not open.
Solved the problem. WD Access and Quick View are still not working, but I found the guide how to connect to my NAS without that stupid tool, by mapping a Network drive to the folder on the NAS: