I’m trying to launch my project game from the unreal engine to my steam deck. I have followed the “Steam Deck Quick Start in Unreal Engine” Guide. I have successfully completed all the steps, however, when it comes to launching the game, I am getting an rsync error. The game builds successfully.
LogPlayLevel: UAT: ********** STAGE COMMAND COMPLETED **********
LogPlayLevel: UAT: ********** DEPLOY COMMAND STARTED **********
LogPlayLevel: UAT: Running: C:\Program Files\Epic Games\UE_5.3\Engine\Extras\ThirdPartyNotUE\cwrsync\bin\rsync.exe -avh --chmod=Du=rwx,Dgo=rx,Fu=rwx,Fog=rx -e "C:\Program Files\Epic Games\UE_5.3\Engine\Extras\ThirdPartyNotUE\cwrsync\bin\ssh.exe -o UserKnownHostsFile='C:\Users\USER\.ssh\known_hosts' -o StrictHostKeyChecking=no -i 'C:\Users\USER\AppData\Local\steamos-devkit\steamos-devkit\devkit_rsa'" --rsync-path="mkdir -p /home/deck/devkit-msvsmon/msvsmon2022 && rsync" --update --delete '/cygdrive/c/Program Files/Microsoft Visual Studio/2022/Community/Common7/IDE/Remote Debugger/' deck@192.
168.0.107:/home/deck/devkit-msvsmon/msvsmon2022
LogPlayLevel: UAT: rsync: [sender] Failed to exec C:\Program: No such file or directory (2)
LogPlayLevel: Error: UAT: rsync error: error in IPC code (code 14) at pipe.c(85) [sender=3.2.3]
LogPlayLevel: UAT: rsync: connection unexpectedly closed (0 bytes received so far) [sender]
LogPlayLevel: Error: UAT: rsync error: error in rsync protocol data stream (code 12) at io.c(228) [sender=3.2.3]
LogPlayLevel: UAT: Took 0.04s to run rsync.exe, ExitCode=12
LogPlayLevel: UAT: Failed to rsync debugger support files to the SteamDeck. Check connection on ip deck@192.168.0.107
LogPlayLevel: UAT: Deploy command time: 0.04 s
LogPlayLevel: UAT: ********** DEPLOY COMMAND COMPLETED **********
LogPlayLevel: UAT: ********** RUN COMMAND STARTED **********
LogPlayLevel: UAT: UnrealTrace: Starting server
LogPlayLevel: UAT: Opening exist instance's shared memory
LogPlayLevel: UAT: Existing instance is the same age or newer
LogPlayLevel: UAT: Starting Client....
LogPlayLevel: Completed Launch On Stage: Deploy Task, Time: 6.014019
LogPlayLevel: UAT: Running: C:\Program Files\Epic Games\UE_5.3\Engine\Extras\ThirdPartyNotUE\cwrsync\bin\ssh.exe -i C:\Users\USER\AppData\Local\steamos-devkit\steamos-devkit\devkit_rsa deck@192.168.0.107 "chmod +x /home/deck/devkit-game/GAME_Win64/RunGameHelper.sh && /home/deck/devkit-game/GAME_Win64/RunGameHelper.sh"
LogPlayLevel: UAT: chmod: cannot access '/home/deck/devkit-game/GAME_Win64/RunGameHelper.sh': No such file or directory
LogPlayLevel: UAT: Took 0.32s to run ssh.exe, ExitCode=1
LogPlayLevel: UAT: Client exited with error code: 1 (see C:\Users\USER\AppData\Roaming\Unreal Engine\AutomationTool\Logs\C+Program+Files+Epic+Games+UE_5.3\Client.log for more info)
LogPlayLevel: UAT: (see C:\Users\USER\AppData\Roaming\Unreal Engine\AutomationTool\Logs\C+Program+Files+Epic+Games+UE_5.3\Log.txt for full exception trace)
LogPlayLevel: UAT: AutomationTool executed for 0h 0m 30s
LogPlayLevel: UAT: AutomationTool exiting with ExitCode=1 (Error_Unknown)
LogPlayLevel: Completed Launch On Stage: Run Task, Time: 0.000080
LogPlayLevel: UAT: BUILD FAILED
PackagingResults: Error: Launch failed! Unknown Error
I’m on Unreal Engine 5.3.2 . It contains the Linux binaries as well. The steam deck connects to the computer successfully. I’ve even renamed the steam deck as ‘deck’ to ensure consistency with the guide. The game deploys in the deck when the game is packed and played within the deck (in Proton Experimental mode). I’m not quite sure what the error is and how I can resolve it. I’d appreciate any thoughts or help anyone can provide.