Error 31520: Cannot establish remote access connection

Hi,

If you are able to reach the drive on a iOS device, on what device are you getting the error?

See if the following link helps

http://community.wd.com/t5/My-Book-Live/RESOLVED-WD-My-Book-Live-Error-31550-30500-31520-amp-amp-31686/m-p/463528#M13859

According to the user reporting his case, he was able to resolve the error performing a quick factory reset from the web interface. Unistalling all the software and reinstalled the drive.  

This resolved the issue for him