To open this project you must first install Visual Studio 2017

"To open this project you must first install Visual Studio 2017.

Would you like to download and install it now?"

This is the popup that happens when you open my uproject on a machine without visual studio.

I’ve packaged the dlls, .modules and .target files but it still pops this up on machines without visual studio.

How do I fix it?

Is this something that just happens if you have a source directory in a project?

And just to be clear - this prevents users without Visual Studio from opening the project because when you select “no” nothing further happens.

At the very least I’d expect people to be able to edit assets and shaders but maybe not be able to run the game.

Perhaps I’m missing adding the right dlls to source control?

Partial progress on this.

With a fresh Windows 10 home install, and a fresh Unreal install (4.17) I was able to repro the problem.

Right clicking on the uproject I had no Unreal actions so followed the instructions here: This file does not have a program associated - Community & Industry Discussion - Epic Developer Community Forums

And this fixed the problem for me! I was able to load and run my project without Unreal.

Why partial progress only? Someone else can’t get the right click actions working properly. Having followed those same instructions he was able to see the right click actions but when he tries to select an engine version he gets asked what application to use.

So it seems the right click actions don’t work for him.

Video here: video 1520914964 - YouTube

Just following up what ended up working out was what Maxwell posted in that other thread
“I have solved my problem by copy the content of Launcher > Binaries > Win64 and paste to the 4_15 > Binaries > Win64 after that I have executed the UnrealVersionSelector.exe inside the 4_15 Win64…”

¯_(ツ)_/¯ Videogame development!