I am using UE5.3.2, I can’t seem to get Advanced Steam Sessions to work properly, when I start in standalone mode, steam overlay doesn’t pop up.
I have installed both plugins Advanced Sessions and Advances Steam Sessions and they are enabled, I’ve added lines in the DefaultEngine.ini file as well and it is a C++ project, I don’t know what I have been missing.
I noticed that if I have online subsystem plugin enabled, I can create sessions, but if I turn that off, I get an error in the console “uninitialized OnlineSubsystem”.

Hello GlenZPS,
I’m facing the same issue with UE5.3.2, I did the same workflow as you, and Steam overlay does show with Standalone launch in the editor.
And when I package my game I get a Fatal Error when I want to launch it., Did you find a way to fix this issue?
I have exactly the same problem and I don’t know how to fix it.
Add these values to your DefaultEngine.ini
[ConsoleVariables]
net.CurrentHandshakeVersion=2
net.MinHandshakeVersion=2
remove the
; If using Sessions
; bInitServerOnClient=true
from the engine.ini file and it should work
It didn’t work.
I found removing all the indents in the Default engine file fixed my issues.
Go through and backspace a couple of times on all the stuff you had to copy past into the file.
hope this helps


