WD 3TB MyCloud Flashing Red Light Right Out of the Box!

Did I just get a dud? My PC will not even recognize it initially.

That is bad to take it out of the box and see the front LED flashing red.

Tell us how you connected your WD My Cloud. Have you looked at the User Manual for your generation of My Cloud?

https://support.wdc.com/product.aspx?ID=904&lang=en