Actually, I've been sharing IDAPI32.cfg for over 20 years (starting with 
Win95 and Novell Netware). The trick is to put it in a folder outside 
Program Files and to make it ReadOnly. As I understand it, IDAPI32.cfg 
contains the BDE parameters and doesn't get updated by users in their 
day-to-day operations. You define a different IDAPI32.cfg file with the 
-O Paradox command line switch.

Her problem may have something to do with the "Windows 10 update 1803 
broke my network connections" problem. Intel NIC card drivers (not all) 
are removed from the computer and the drivers need to be manually 
re-installed. Something to do with an .inf file being deleted by the update.

https://www.techrepublic.com/article/how-to-resolve-network-problems-caused-by-the-windows-10-april-2018-update/


Leslie wrote on 28/06/2018 4:30 PM:
> First thing to know is that the idapi.cfg was never designed to be 
> shared across a mapped drive (Terminal Server is a different situation).
>