[quote=“Nostrildumbass, post:2659, topic:30020”]
I was having the same issue about the OnlineSubsystem plugin not being found, but I’d get a window at launch showing me the error (if you look back just a page or two my post about it is here somewhere). It took me a lot of trial and error to fix it to where I don’t even know what did fix it. Try disabling all the OnlineSubsystem plugins in your plugins settings in UE, close UE, re-open your project, re-enable all the plugins, and re-package then. That was one of the things I remember doing.
https://forums.unrealengine.com/comm…70#post1806894
Nothing works, finally i can export game, i open and Steam don’t show, also don’t work Online subsystem (No Logs).
I disabled online subsystem + steam and Advanced sessions + steam, nothing works 
Warnings:
LogPlayLevel: Warning: LogSteamShared: Warning: SteamAPI failed to initialize, conditions not met.
LogPlayLevel: Warning: LogOnline: Warning: STEAM: Steamworks: SteamUtils() failed!
LogPlayLevel: Warning: LogOnline: Warning: STEAM: Steamworks: SteamUser() failed!
LogPlayLevel: Warning: LogOnline: Warning: STEAM: Steamworks: SteamFriends() failed!
LogPlayLevel: Warning: LogOnline: Warning: STEAM: Steamworks: SteamRemoteStorage() failed!
LogPlayLevel: Warning: LogOnline: Warning: STEAM: Steamworks: SteamUserStats() failed!
LogPlayLevel: Warning: LogOnline: Warning: STEAM: Steamworks: SteamMatchmakingServers() failed!
LogPlayLevel: Warning: LogOnline: Warning: STEAM: Steamworks: SteamApps() failed!
LogPlayLevel: Warning: LogOnline: Warning: STEAM: Steamworks: SteamNetworking() failed!
LogPlayLevel: Warning: LogOnline: Warning: STEAM: Steamworks: SteamMatchmaking() failed!
LogPlayLevel: Warning: LogOnline: Warning: STEAM: Steam API failed to initialize!
LogPlayLevel: Warning: LogModuleManager: Warning: ModuleManager: Module 'OnlineSubsystemNULL' not found - its StaticallyLinkedModuleInitializers function is null.
LogPlayLevel: Warning: LogOnline: Warning: OSS: TryLoadSubsystemAndSetDefault: LoadSubsystemModule([NULL]) failed
*Errors to launch, i can’t join but Steam overlay not show
Bad moment for make games on UE4…
Edit:
All works now… idk why 
just disabled all and works