My macbook will not re-format my WD Passport for Mac OS

I have just purchased a WD Passport 4TB External Drive. I want to re-format it in EXFAT for use on pc’s and mac OS.
Disk Utility on my macbook will not erase or re-partition the new drive. Each time it reads:
“Erase [or Partition] Process Failed”
What am I doing wrong?

Hi fyockers,

You should follow the instructions mentioned in below article to reformat My Passport device: