I have 3 WD Nas drives. Two of them are the My Cloud EX2 Ultra, one is the regular WD My Cloud series. This morning, I changed my LAN DHCP DNS settings from 18.104.22.168 to 22.214.171.124 and 126.96.36.199. When I did I didn’t pay much attention to the drives at that time. It wasn’t until later on when I attempted to access it, I encountered an issue with the AFP/SMB on the Ultras. I wasnt able to authenticate to them, and even though they responded to ICMP the web interface would not come up, and neither would the shares. I rebooted them several times, disconnected the network from them, no change. It wasn’t until I changed the DHCP DNS back to 188.8.131.52 that the devices functioned again.
I can possibly understand the web login not working, but why would SMB not work?
No, support when it comes to networking have found is pretty useless. When I asked the for assistance on the nas to mas copy app they told me I had to open a port on the firewall for both devices that were on the same network subnet. No matter how hard I tried to explain that to them it didn’t sink in.
I also have a My Cloud EX2 Ultra and change my LAN DNS settings all the time without any problems. Are Dynamic DNS and HTTPS Redirect disabled via the dashboard? What is the current firmware version of each My Cloud EX2 Ultra?