How to set C++ language standard for VS2019 in an Unreal project?

I am trying to a simple thing, just like that, in a header file;

#include <filesystem> #include <iostream>   namespace fs = std::filesystem;   

And IntelliSense goes: namespace std has no member filesystem.

Okay no worries, it’s an easy fix. Just set the C++ language standard in the propery pages…

Well, it turns out it isn’t, it’s not an option in Unreal VS project. Tried typing in search bar, View -> Property pages, but no luck.

Okay let’s try doing the whole thing in a console project first.

Same message from IntelliSense as before.

Ok, no worries, I found this.

I found my settings under: Project > projectname Properties

And voila, the console app works.

Let’s try it in the Unreal project.

Well, well… My options are limited here.


I had a look around in the project settings as well:


How do I get this filesystem header work with my project?