Error 0x8007003B: An unexpected network error occurred

ASUS RT-AC66U router - latest firmware

Windows Vista & Windows 8

WD MycloudMirror 4TB - Firmware 1.05.21 - and static IP

When copying a large number of files to the Disk, I get this error on a regular basis.  Options are Retry, Skip, Cancel.  I choose retry and it carrys on.  I have the disk configured as a mapped drive.  When the error occurs, I cannot connect to the device at all.

If I use xcopy to move my files, the process will hang, but continue on without intervention.   The web is full of recommendations and I have tried some of them with no luck.

Any fixes out there?

Hi Lz1234, welcome to the Community, see if the following link helps. 

http://community.wd.com/t5/WD-My-Cloud/My-cloud-nightmare/td-p/658445/highlight/true

I am not sure how that thread is related except for the xcopy.  xcopy still fails, it just resolves itself instead of spitting out a retry error.  I get great throughtput - almost 3MB/s, thats not the issue.  This happens ~every 1-2 minutes.

Example of Error