Unable to access dashboard unless I reboot my EX2

I found your post while I was searching Google for “mycloudex2ultra.local’s server DNS address could not be found”

I had the same problem earlier today, but got around it, I don’t know if all of the steps are necessary…

-cleared the history from my web browser
-re-booted my computer
-un-plugged and re-plugged the power to the MyCloudEX2 Ultra (since it doesn’t have a power button

I was then able to access the Dashboard

I did NOT need to do a reset on the MyCloudEX2 Ultra

on a side-note regarding RESETTING the MyCloudEX2 Ultra, I had major problems with this when I first got my drive a couple of months ago. I could not get the unit to reset using the standard WD Support page instructions (it would repeatedly say the blank admin password was “incorrect” after every reset, even though the default admin password should be blank) I was only able to do a proper reset using the instructions found here:

Reset Summary:
Unplug (turn off) the drive
Hold the Reset button down
Plug the power wire back in (turn drive on)
Continue holding down the reset button for 40 seconds, then let go
Be patient, the reset drive will take about 5 minutes to re-boot

the key is holding down the reset button for 40 seconds after powering off and on