I had to change both the Engine and Project preference settings as stated in other comments. Then completely close out of my game project (i.e. close UE4 completely). Then “Regenerate project files” (or whatever that’s called I forget) in the project folder on the disk. After generating project files, then I was able to reopen my game project in UE4 and Unreal finally started using Visual Studio 2017 for me (instead of 2015)!
1 Like