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Can't find session in LAN

So, what is the right way to use the LAN feature.

I have [OnlineSubsystem] DefaultPlatformService=Null in my default engine.ini and PrivateDependencyModuleNames.Add("OnlineSubsystemNull"); in my build.cs

Use LAN is checked

I can create a session but can't find it on another computer, it said the sessionlist's size is 0. I can also use "open" to join the game.

is there something I missed?

but everything worked fine on one computer(findsession,joinsession)

Product Version: UE 4.11
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asked Nov 09 '16 at 10:50 AM in Using UE4

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avatar image zhoudao200 Nov 09 '16 at 11:59 AM

I tried multiplayerShootOut but changed to onlinesubsystemNull, same issue. computer's firewall closed.

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fixed, just turn off your computer's VirtualBox NetWork Adapter or something like that.

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answered Nov 10 '16 at 02:30 AM

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avatar image vito0719 Mar 08 '17 at 02:30 PM


avatar image ENiari Games Jul 11 '17 at 08:16 PM

Okay, I hate to be that guy, opening up old posts... But that didn't just happen. I can't believe that is the only way to make multiplayer work on a host. Is there any other way to find a LAN game in UE4 without having to disable VBox's Network Adapters in Windows control panel->Network Adapters?

avatar image Jinc Jan 18 '19 at 11:00 PM

Can confirm this fix for my test project in UE 4.21.1

avatar image m_foda May 08 '19 at 01:21 AM

Yup. Confirmed this is what finally worked for me as well with the MutliplayerShootout tutorial on UE 4.22.

avatar image dkmartov May 28 '19 at 11:03 AM

I would imagine that this is the solution only for people using virtual box?

avatar image mfoda-pumpkin May 28 '19 at 11:53 AM

In my case I was using Hyper-V and didn't have virtual box installed, so I guess installing any kind of virtualizarion software will end up creating virtual adapters. Easy way is to just check under windows' network settings to see if you have any enabled.

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