One computer cant access shares

I have five computers in my office all running windows 10. Installed a new computer also windows 10 it is on the network can access the WD web page but it cant access any shares it times out with this error
“security policy does not support unauthorized guest access wd my cloud” This user is running as an admin all computers on a private network member of the same workgroup not sure where to go from here any suggestions?

Do you have a My Cloud or a My Cloud Home device?

WD My Cloud