Went to the Download Windows 10 Disc Image (ISO File) site and after selecting the correct edition I tried to downloaded the ISO to a USB 3 drive (16 GB capacity). Each time I attempted the download, 3 times, it go to 97% and then said the download was interrupted. When I clicked resume it immediately said that the file could not be downloaded. Tried this on two different PCs and two different USB drives. Never had that happen before. When I tried it for the 4th time I downloaded it to my desktop and it worked fine. Any thoughts on why it wouldn't download to the USB drive?

Duh, problem solved: the 16 GB USB drive was formatted FAT32. I reformatted it NTSF and was able to copy the ISO to the drive.