# Join Session not working in 5.6 listen server (both steam and EOS) **URL:** \ **Category:** Multiplayer & Networking\ **Tags:** unreal-engine, Multiplayer, bug-report, question\ **Created:** [June 16, 2025, 2:59pm UTC](https://forums.unrealengine.com/t/join-session-not-working-in-5-6-listen-server-both-steam-and-eos/2560472 "2025-06-16T14:59:27Z")\ **Posts on this page:** 11\ **Page:** 1
**Author:** ![The0cake](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@The0cake](https://forums.unrealengine.com/u/The0cake)\ **Post date:** [June 16, 2025, 2:59pm UTC](https://forums.unrealengine.com/t/join-session-not-working-in-5-6-listen-server-both-steam-and-eos/2560472/1 "2025-06-16T14:59:27Z")
Hello, in 5.6 joining session in build game failed on connection to the server by both methods: trying to connect via advanced steam plugin or EOS (dev tool). Creating session and finding sessions works fine. 1. [2025.06.16-14.43.33:863][258]LogSockets: Warning: GetAddressInfo failed to resolve host with error SE\_HOST\_NOT\_FOUND [11001] 2. Always trying to load MainMenu map EOS [2025.06.16-14.43.33:855][258]LogGlobalStatus: UEngine::Browse Started Browse: “EOS:00025b221d9c4558a195d6e72d7e30af:GameNetDriver:97/Game/Maps/MainMenu” [2025.06.16-14.43.33:855][258]LogNet: Browse: EOS:00025b221d9c4558a195d6e72d7e30af:GameNetDriver:97/Game/Maps/MainMenu [2025.06.16-14.43.33:855][258]LogCsvProfiler: Display: Metadata set : iris=“0” [2025.06.16-14.43.33:855][258]LogNet: InitBase PendingNetDriver (NetDriverDefinition GameNetDriver) using replication model Generic [2025.06.16-14.43.33:858][258]LogInit: WinSock: Socket queue. Rx: 32768 (config 32768) Tx: 32768 (config 32768) [2025.06.16-14.43.33:858][258]LogNet: Created socket for bind address: 0.0.0.0:0 [2025.06.16-14.43.33:859][258]LogNet: IpConnection\_2147482355 setting maximum channels to: 32767 [2025.06.16-14.43.33:859][258]PacketHandlerLog: Loaded PacketHandler component: Engine.EngineHandlerComponentFactory (StatelessConnectHandlerComponent) [2025.06.16-14.43.33:860][258]LogHandshake: Stateless Handshake: NetDriverDefinition ‘GameNetDriver’ CachedClientID: 7 [2025.06.16-14.43.33:860][258]LogNet: Game client on port 7777, rate 100000 [2025.06.16-14.43.33:860][258]LogNetVersion: ProjectHorror 1.0.0.0, NetCL: 43139311, EngineNetworkVersion: 42, GameNetworkVersion: 0 (Checksum: 174104283) [2025.06.16-14.43.33:863][258]LogSockets: Warning: GetAddressInfo failed to resolve host with error SE\_HOST\_NOT\_FOUND [11001] [2025.06.16-14.43.33:865][259]LogNet: Warning: Encountered an error, cleaning up this connection now [2025.06.16-14.43.33:872][260]LogNet: Error: UEngine::BroadcastNetworkFailure: FailureType = PendingConnectionFailure, ErrorString = Your connection to the host has been lost., Driver = Name:PendingNetDriver Def:GameNetDriver IpNetDriver\_2147482418 [2025.06.16-14.43.33:872][260]LogNet: Warning: Network Failure: PendingNetDriver[PendingConnectionFailure]: Your connection to the host has been lost. [2025.06.16-14.43.33:872][260]LogNet: NetworkFailure: PendingConnectionFailure, Error: ‘Your connection to the host has been lost.’ [2025.06.16-14.43.33:872][260]LogNet: DestroyNamedNetDriver: Name:PendingNetDriver Def:GameNetDriver IpNetDriver\_2147482418 [2025.06.16-14.43.33:884][261]LogGlobalStatus: UEngine::Browse Started Browse: “/Game/Maps/MainMenu?closed” [2025.06.16-14.43.33:884][261]LogNet: Browse: /Game/Maps/MainMenu?closed [2025.06.16-14.43.33:884][261]LogNet: Connection failed; returning to Entry [2025.06.16-14.43.33:884][261]LogLoad: LoadMap: /Game/Maps/MainMenu?closed Steam [2025.06.16-13.33.35:635][803]LogGlobalStatus: UEngine::Browse Started Browse: “steam.76561198968469460/Game/Maps/MainMenu” [2025.06.16-13.33.35:635][803]LogNet: Browse: steam.76561198968469460/Game/Maps/MainMenu [2025.06.16-13.33.35:635][803]LogNet: InitBase PendingNetDriver (NetDriverDefinition GameNetDriver) using replication model Generic [2025.06.16-13.33.35:637][803]LogInit: WinSock: Socket queue. Rx: 32768 (config 32768) Tx: 32768 (config 32768) [2025.06.16-13.33.35:637][803]LogNet: Created socket for bind address: 0.0.0.0:0 [2025.06.16-13.33.35:637][803]LogNet: IpConnection\_2147482228 setting maximum channels to: 32767 [2025.06.16-13.33.35:638][803]PacketHandlerLog: Loaded PacketHandler component: Engine.EngineHandlerComponentFactory (StatelessConnectHandlerComponent) [2025.06.16-13.33.35:638][803]LogHandshake: Stateless Handshake: NetDriverDefinition ‘GameNetDriver’ CachedClientID: 2 [2025.06.16-13.33.35:638][803]LogNet: Game client on port 7777, rate 100000 [2025.06.16-13.33.35:638][803]LogSockets: Warning: GetAddressInfo failed to resolve host with error SE\_HOST\_NOT\_FOUND [11001] ---
**Author:** ![Rev0verDrive](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/rev0verdrive/32/907214_2.png) [@Rev0verDrive](https://forums.unrealengine.com/u/Rev0verDrive)\ **Post date:** [June 17, 2025, 12:26am UTC](https://forums.unrealengine.com/t/join-session-not-working-in-5-6-listen-server-both-steam-and-eos/2560472/2 "2025-06-17T00:26:07Z")
How are you testing? FYI, Server and Clients need to use different accounts. ---
**Author:** ![The0cake](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@The0cake](https://forums.unrealengine.com/u/The0cake)\ **Post date:** [June 17, 2025, 12:35pm UTC](https://forums.unrealengine.com/t/join-session-not-working-in-5-6-listen-server-both-steam-and-eos/2560472/3 "2025-06-17T12:35:18Z")
The build is pushed to Steam, my friends and I downloaded it and tested on our own individual accounts, which are all added to Steamworks. We are located in the same city. In version 5.5, everything works fine with the same setup. However, in version 5.6, even a clean project with just the multiplayer setup doesn’t work. The dedicated server seems to function properly — the problem persists only with listen servers, according to discussions in the Unreal Discord. Again, session creation works fine, and traveling to the level as the server also works correctly. Clients can find and see the sessions, but they cannot join — error logs were included in my previous message. ---
**Author:** ![Ninhow](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Ninhow](https://forums.unrealengine.com/u/Ninhow)\ **Post date:** [June 17, 2025, 10:33pm UTC](https://forums.unrealengine.com/t/join-session-not-working-in-5-6-listen-server-both-steam-and-eos/2560472/4 "2025-06-17T22:33:34Z")
Hello! I solved it by adding SteamSockets plugin and dependency. Then i just updated my DefaultEngine.ini ```auto [/Script/Engine.GameEngine] !NetDriverDefinitions=ClearArray +NetDriverDefinitions=(DefName="GameNetDriver",DriverClassName="/Script/SteamSockets.SteamSocketsNetDriver",DriverClassNameFallback="/Script/SteamSockets.SteamNetSocketsNetDriver") [OnlineSubsystem] DefaultPlatformService=Steam [OnlineSubsystemSteam] bEnabled=true SteamDevAppId=480 bInitServerOnClient=true [/Script/OnlineSubsystemSteam.SteamNetDriver] NetConnectionClassName="OnlineSubsystemSteam.SteamNetConnection" ``` Notice the actual netDriverDefinitions. ---
**Author:** ![Rev0verDrive](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/rev0verdrive/32/907214_2.png) [@Rev0verDrive](https://forums.unrealengine.com/u/Rev0verDrive)\ **Post date:** [June 18, 2025, 5:10am UTC](https://forums.unrealengine.com/t/join-session-not-working-in-5-6-listen-server-both-steam-and-eos/2560472/5 "2025-06-18T05:10:59Z")
Aahhh, thought you would have already had that implemented. I need to do a guide. ---
**Author:** ![fabinoutlamet](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@fabinoutlamet](https://forums.unrealengine.com/u/fabinoutlamet)\ **Post date:** [June 21, 2025, 10:06am UTC](https://forums.unrealengine.com/t/join-session-not-working-in-5-6-listen-server-both-steam-and-eos/2560472/6 "2025-06-21T10:06:14Z")
\<3 ---
**Author:** ![MattSierra](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@MattSierra](https://forums.unrealengine.com/u/MattSierra)\ **Post date:** [August 2, 2025, 4:48pm UTC](https://forums.unrealengine.com/t/join-session-not-working-in-5-6-listen-server-both-steam-and-eos/2560472/7 "2025-08-02T16:48:15Z")
bump, so my question now is if we are forced to use SteamSockets for networking instead of standard one? Or there is way to make it work without SteamSockets? ---
**Author:** ![SebBergy2.0](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/sebbergy2.0/32/1214708_2.png) [@SebBergy2.0](https://forums.unrealengine.com/u/SebBergy2.0)\ **Post date:** [September 2, 2025, 6:41pm UTC](https://forums.unrealengine.com/t/join-session-not-working-in-5-6-listen-server-both-steam-and-eos/2560472/8 "2025-09-02T18:41:41Z")
Hello, can someone running into this issue share their DefaultEngine.ini? Please redact any sensitive information. ---
**Author:** ![SebBergy2.0](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/sebbergy2.0/32/1214708_2.png) [@SebBergy2.0](https://forums.unrealengine.com/u/SebBergy2.0)\ **Post date:** [September 3, 2025, 12:52pm UTC](https://forums.unrealengine.com/t/join-session-not-working-in-5-6-listen-server-both-steam-and-eos/2560472/9 "2025-09-03T12:52:39Z")
Hey folks, I was working with someone on this issue and they spotted in their config that they were still using NetDriverEOSBase. Note that NetDriverEOSBase is deprecated in 5.6 in favor of using NetDriverEOS. See this CL for the details: [https://github.com/EpicGames/UnrealEngine/commit/efb814b99f77d79936d4547862088ba5b5766403](https://github.com/EpicGames/UnrealEngine/commit/efb814b99f77d79936d4547862088ba5b5766403) ---
**Author:** ![lehuan5062](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@lehuan5062](https://forums.unrealengine.com/u/lehuan5062)\ **Post date:** [November 14, 2025, 2:10pm UTC](https://forums.unrealengine.com/t/join-session-not-working-in-5-6-listen-server-both-steam-and-eos/2560472/10 "2025-11-14T14:10:47Z")
Switching to “/Script/SocketSubsystemEOS.NetDriverEOS” does not fix my connection to EOS dedicated server. My client keep getting connection timed out. This is in my ini: ```ini [OnlineSubsystemEOS] bEnabled=true [OnlineSubsystem] DefaultPlatformService=EOS [/Script/Engine.Engine] +ActiveGameNameRedirects=(OldGameName=“TP_Blank”,NewGameName=“/Script/ElitePlugins”) +ActiveGameNameRedirects=(OldGameName=“/Script/TP_Blank”,NewGameName=“/Script/ElitePlugins”) +NetDriverDefinitions=(DefName=“GameNetDriver”,DriverClassName=“/Script/SocketSubsystemEOS.NetDriverEOS”,DriverClassNameFallback=“/Script/OnlineSubsystemUtils.IpNetDriver”) +NetDriverDefinitions=(DefName=“DemoNetDriver”,DriverClassName=“/Script/Engine.DemoNetDriver”,DriverClassNameFallback=“/Script/Engine.DemoNetDriver”) [/Script/Engine.GameEngine] +NetDriverDefinitions=(DefName=“GameNetDriver”,DriverClassName=“/Script/SocketSubsystemEOS.NetDriverEOS”,DriverClassNameFallback=“/Script/OnlineSubsystemUtils.IpNetDriver”) +NetDriverDefinitions=(DefName=“DemoNetDriver”,DriverClassName=“/Script/Engine.DemoNetDriver”,DriverClassNameFallback=“/Script/Engine.DemoNetDriver”) [/Script/OnlineSubsystemEOS.EOSSettings] CacheDir=CacheDir DefaultArtifactName=MobileClient RTCBackgroundMode= TickBudgetInMilliseconds=0 bEnableOverlay=False bEnableSocialOverlay=False bEnableEditorOverlay=False bPreferPersistentAuth=True TitleStorageReadChunkLength=0 bUseEAS=False bUseEOSConnect=True bUseEOSRTC=False bMirrorStatsToEOS=False bMirrorAchievementsToEOS=False bUseEOSSessions=True bMirrorPresenceToEAS=False bUseNewLoginFlow=False ``` ---
**Author:** ![CHADALAK1](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@CHADALAK1](https://forums.unrealengine.com/u/CHADALAK1)\ **Post date:** [January 16, 2026, 8:17am UTC](https://forums.unrealengine.com/t/join-session-not-working-in-5-6-listen-server-both-steam-and-eos/2560472/11 "2026-01-16T08:17:24Z")
Same here. I still get kicked back to the main menu