problem with create/join session after 4.13

Hello.
I’ve currently got a problem with the create and join session after i update to 4.15. The problem I’m having is after I created a session and try to connect to it the find session will always return me a 0 even if I create multi-pal session.

I tried to create an empty project in 4.13 and set it up in the same way and then it works fine but i never got it to work on 4.14 and 4.15

My GameInstance

DefaultEngine.ini





LocalMap=/Game/Example_Map
GameName=MyProject

[/Script/EngineSettings.GameMapsSettings]
EditorStartupMap=/Game/SideScrollerBP/Maps/SideScrollerExampleMap
TransitionMap=
bUseSplitscreen=True
TwoPlayerSplitscreenLayout=Horizontal
ThreePlayerSplitscreenLayout=FavorTop
GameDefaultMap=/Game/SideScrollerBP/Maps/SideScrollerExampleMap
GlobalDefaultGameMode=/Game/SideScrollerBP/Blueprints/SideScrollerGameMode.SideScrollerGameMode_C
GlobalDefaultServerGameMode=None
GameInstanceClass=/Game/SideScrollerBP/NewBlueprint.NewBlueprint_C

[/Script/IOSRuntimeSettings.IOSRuntimeSettings]
MinimumiOSVersion=IOS_8


[/Script/Engine.Engine]
+ActiveGameNameRedirects=(OldGameName="TP_SideScrollerBP",NewGameName="/Script/MyProjecffft")
+ActiveGameNameRedirects=(OldGameName="/Script/TP_SideScrollerBP",NewGameName="/Script/MyProjecffft")

[/Script/HardwareTargeting.HardwareTargetingSettings]
TargetedHardwareClass=Desktop
AppliedTargetedHardwareClass=Desktop
DefaultGraphicsPerformance=Maximum
AppliedDefaultGraphicsPerformance=Maximum

**[OnlineSubsystem]
DefaultPlatformService=Null
**


Can’t help you, but it’s working for me on 4.13.* and 4.14.* - at least with Steam Subsystem.

[OnlineSubsystem]
DefaultPlatformService=Null

is this correct?

This worked for me in the 4.13 but not 4.14 or 4.15

I use version 4.15 too.

I have set “listen” option in “open level” function when I create Session.

And I can find session and get the session info(like MaxPlayers ,ServerName etc).

But I stay at current level(Map_MainMenu) when I try to join session ,through I get “On Success” Pin .

(I Insert image here failed…)

Also find the issue “UE-42368” here:https://issues.unrealengine.com/issue/UE-42368
and https://answers.unrealengine.com/questions/567746/networking-session-bug-empty-results-with-415.html

-_-!!!