Correct, I followed the tool tip into C/C++ Configurations
(It gave me the option to update settings for “Unreal” or “BullCowGame” and I chose the latter.)
I suspect I’m supposed to add something to “Defines” but I’m beyond my ken.
I was running:
Windows Version 10.0.18362 Build 18362
Unreal 4.25.1
VScode version 1.46
Rolling back to unreal 4.22.3, deleting the BullCowGame files and re-installing them, then restarting my machine, and re-launcing BullCowGame in Unreal 4.22.3 resolved the issue