UE 5.5 Steam Mutliplayer Setup/Solo Testing Tutorial

I recently went through the mess of following outdated tutorials and various sources to get Steam multiplayer working for Unreal Engine 5.5, and after figuring out all of the gotchas (and some new [engine changes breaking the advanced sessions plugin for UE 5.5](https://forums.unrealengine.com/t/ue-5-5-online-subsystem-join-session-always-results-in-on-failure/2125579/5)), I wanted to summarise my findings in a YouTube video to share with all. Additionally unlike all prior tutorials I've seen, I included as section on testing Steam multiplayer solo from one PC using Sandboxie.

Video: [UE 5.5 Steam Multiplayer Setup & Testing in 10 minutes](https://youtu.be/5nMKEKV0acI)

I also made a <1 min [Shorts version](https://youtube.com/shorts/ffcPShidWmA) that summarises all of the steps *very* quickly, but is really more of a taster for those who care to check out the full video.

My other motivation for making this is that I feel while there is good Unreal content out there, a lot of it is buried in contextless videos, or on the flip-side several hour long courses or UE official Streams, with so much tangential information to what you're looking for that it becomes impossible to digest (No, I don't enjoy watching you tweak the placement of an object or UI animation - can I have my 30 minutes back please :) ). In my opinion, the best way to learn is to have just enough knowledge to understand the what and why of something (and ideally a few briefly explained examples with context, .e. the 'how') to go away and consolidate and expand that knowledge yourself. I personally feel UE still largely lacks up-to-date, concise, and easily comprehensible tutorials in this regard.

That's not to hit at anyone making existing tutorials, there are many good ones out there, but I find a lot of them are not for me, and having someone ask 'How do I add a new ability or enemy?' on "How to make generic RPG episode #157" screams to me that maybe there's a better (more engaging and to-the-point) way we could be teaching the tools, rather than how to make 'x' game genre. Fundamentally, I find the more detailed tutorials that offer this context often end up painful to watch, as it's often 10% informative content, and 90% repeating the same concepts that you would be better of reinforcing yourself. Anyway, rant over and thanks generally to those who have taken the time to make tutorials and help others (myself included) over the years.

I Hope the tutorial above helps anyone else looking to do this, and I'd love to hear any feedback here or on YouTube re production quality or future tutorial requests as I feel there's still a big gap in the UE tutorial space for 5-minute concise, accessible, and up-to-date information.