LAN sessions not working using steam

mightyenigma · June 2, 2018, 4:59pm

Wait, so I can do LAN and Steam on the same build of my game, and the user just has to turn off Steam and then LAN will work (as long as the LAN checkboxes are on/off?)
But then if I want to support both, should I put my DefaultEngine.ini to have NULL or Steam as the OnlineSubsystem?

Alfffffffffff · October 16, 2018, 11:54pm

any news on this one? i am having the exact same problem

Nonlin · October 26, 2018, 4:40am

Did you ever figure this out?

mightyenigma · October 26, 2018, 6:03pm

No I haven’t done anything toward Steam yet, just got LAN working.

ruggy · November 6, 2021, 10:22am

" if you and all players exit steam (quit the program) it should work fine…"

But it’s impossible to run without Steam if it is a Steam game!

And putting Steam into ‘offline mode’ still uses the Steam subsystem, so it STILL doesn’t work for LAN.

leoliam · July 3, 2022, 11:53pm

I know this is a really old thread now but I was looking for this exact problem myself and found the answer on another thread (after finding this one first): Understanding Steam and LAN multiplayer - #2 by VirtualNK
In summary you use:

MapName?listen?bIsLanMatch=1

Doomgriever · July 22, 2022, 4:16pm

Thank you!
Had been struggling with this for a while now. This finally works in Steam (both Online and LAN).

To clarify for others using BP, this is how I set it up.

So the ?bIsLanMatch=1 goes into the OpenLevel Options