Launching on steam deck does not work on UE 5.1

Steam Deck Quick Start in Unreal Engine | Unreal Engine 5.0 Documentation I have followed this guide for steam deck, all steps worked until the launching, UAT just throws this error:

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I am speechless, it seems like nothing works at all, I tried to deploy my test via Steam devkit and this is what I get:

As usual, never receiving help but responding my own posts, it turns out I was dump enough, all I needed was set the exe name on the command start, all works now

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Did you manage to get it working through UE?

Pretty much hitting the same wall. My sample projects works fine via the Steam Devkit Management Tool (with proton experimental) but when starting it via UE, the deployment fails because of missing files in my UE installation - specifically I’m missing the Engine\Build\SteamDeck directory, which should contain a python script with the name “steam-client-run-game”.

I’ve tried installing different versions of the engine and none of my tested ones seem to have it (4.27, 5.0.3, 5.1.0). It’s not even part of the unreal engine source on github.

you need to install linux and the builder, you can find it from the official docs, with that you should be able to deploy from the client, the UE’s launcher does not work a bit. I deployed my game but now is crashing, I don’t know how to debug, it is pain

Hi! Would you be so kind as to elaborate? How do you set the mentioned command? Thank you in advance!

Don’t really understand this answer, too. Could we get a dev in here? IF there is a build supposed to be in the background, it is clearly not working/ deployed to the wrong folder…

Hi Everyone,

I think I managed to solve this issue via re-creating the missing “steam-client-run-game” script. I’m still testing it, but so far I was able to successfully lunch my game directly from the UE Editor.

You can find my script on GitHub: GitHub - dhodvogner/steam-client-run-game: Hodi's unofficial steam-client-run-game fix for Steam Deck (Unreal Engine 5)

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Hi @ZkarmaKun how do you solve the “password” issue from your screenshot im trying to use UE 5.3

Were you able to make any progress on this? I’m stuck on the same problem.

Hey @Patryk, uff sorry for the delay response, I almost never use the forums now, I am really sorry to say that I don’t remember, AFAIK what I did was follow the official documentation from unreal, my only complain is that launch directly from the engine was not working at the time, (maybe on 5.3 works) so what I did is create an .exe and use the steam utility to copy that into the steam deck, it did worked that way