CorelDraw X8 - 64 bit - cannot locate network drive - error message 'does not exist'

As from 2 days ago I cannot open a .cdr file that exists on a network drive.  It will only open file on my computer's personal drive.

The error says "..............xx is unavailable.  If the location is on this PC make sure device or drive is connected..."

I can read the drive and can open other programs on that drive.