WD My Passport Ultra stopped mounting

WD External Drives WD Portable Drives
1

My drive has become invisible to my macbook today.
Same macbook can see other usb drives instantly.
PPUltra can mount on my pc laptop.
It mounted temporarily about an hour ago. When I unmounted and then re-connected it is again invisible.

2

Hi Derek65,

You can follow below mentioned article in this concern: