Have a brand-new MyCloud NAS drive. Setup went OK, and can access it via the control panel. Transferred several GB of old data from prior Windows systems (XP, mostly) to the drive. Now, it demands that I log in to it and says that it is not accessible on my network, even though there are no passwords set.
The strange thing is that this problem is from a Win 7 Home Premium installation. However, I can access all the shares on the drive from a Mac without any problem.