A family of Microsoft spreadsheet software with tools for analyzing, charting, and communicating data.
I found a fix that worked for me after I posted this. Tried on 2 different computers, one running W10 and Office 2016 and one running W7 and office 2016.
Download from IBM the latest Service Pack update for iSeries version 7.1, which is currently SI66062. You may need to download and install both VCREDIST_x64.exe and VCREDIST_x86.exe before installing the service pack. (One of the computers I couldn't install the service pack until I installed both of the vcredist files).The other computer I was able to just install the service pack. Once done both installed the CWBTFCAI.DLL file without issues. You will need to select comm add-ins and not excel add-ins prior to selecting the path to the file.