Hello 
we are working on a demo for steam (using UE 5.2.) and failed steams technical report by the prerequisites installation via the epic launcher on opening the packaged game. In our case the following was missing and needed to be installed:
DirectX End-User Runtimes - June 2010
Visual C++ Redistributable 2022
They wrote us:
“Your build has failed our review because it doesn’t launch on Windows due to missing Unreal Engine prerequisites. This is caught by the Unreal launcher, but the Steam installation is expected to resolve all dependencies without third-party launchers “
Now my question is:
is there any option in the projects / packaging settings to fulfil this request? As otherwise we have to dive into the custom installer topic with steam.
In particular, I want to understand the following packaging settings:
In our packaging settings “include prerequisites installer” was checked and the “include app-local prerequisites” was unchecked for the packaged version steam has tested.
We did on fresh computer (without the missing visual c++ 2022 redistributable that needed to be installed) the following tests:
a) “include prerequisites installer” only checked → an error appeared that wanted to install it and at confirming this, a epic launcher window appears.
b) none of it was checked → error message appeared - that this need to be installed, which can only be closed (does not install anything).
c) “include app-local prerequisites” was checked → the game started without this error note
d) “include app-local prerequisites” + “include prerequisites installer” was checked → same result as c)
I want to understand what version c,d means in order to avoid unwanted results or another fail in steams review.
Thanks for your help 