Even after I followed the setup instructions for VS I am still getting false positives with the red squigglies
The file and the macro aren’t generated until you first build, once you have built, those intellisense “errors” should go away.
It’s very easy to confuse the intellisense, so I wouldn’t always trust its assessments 
VS on my first project works perfectly, on my second one the squiggles remain no matter how many times I rebuild the whole engine.