Thanks for confirming and saving me the trouble of reinstalling VS. I submitted a Bug report on this in preview and they responded to me asking for more information and suggesting i following the visual studio setup instructions but it didnt work.
EDIT:
If you include anything from the Engine, the errors goes away but intellisense doesnt work. At least you don’t see the errors.
I added this:
include “Engine/TriggerVolume.h”