Project Settings Reference

EOSCore is configured in Project Settings > Plugins > EOSCore Plugin. The settings are saved in Config/DefaultEngine.ini under the section [/Script/OnlineSubsystemEOSCore.EOSCoreSettings].

EOS Configurations

You can add several configurations, for example one for the client and one for a dedicated server. The plugin picks one when it starts:

1. The configuration named by the -EOSConfig= command line argument, if it exists.
2. Otherwise the configuration named by Default Configuration Name.

If no configuration matches, the plugin does not initialize and the log shows GetEOSConfig(): Did not find any EOS Configuration.

Setting	Description
Config Name	Name used by Default Configuration Name and -EOSConfig=
Product Id	From the Developer Portal, Product Settings
Sandbox Id	From the Developer Portal. Overridden by -epicsandboxid=
Deployment Id	From the Developer Portal. Overridden by -epicdeploymentid=
Client Id	Client created in Client & Policy Settings. Client ids start with xyz
Client Secret	Secret of that client
Encryption Key	Exactly 64 hexadecimal characters (a 256 bit key). Used to encrypt Player Data Storage files. The default value 1111… is only a placeholder, generate your own key before you ship
Enable RTC	Enables the RTC (voice) interfaces. Turn it off if you don't use EOS voice

warning

The Client Secret is stored in DefaultEngine.ini and ships with your game. Use a client policy that only allows what the game client needs, and a separate configuration with its own client for servers.

General Settings

Setting	ini key	Description
Default Configuration Name	DefaultConfigurationName	Configuration used when -EOSConfig= is not set. Default DefaultConfig
Tick Budget In Milliseconds	TickBudgetInMilliseconds	Time budget for EOS work per tick. 0 means no limit
Scope Flags	ScopeFlags	Epic Account permissions requested by the Login node. Must match the permissions of your application in the Developer Portal, see Scope Consent
iOS Client Id	IOSClientId	Client Id used for the iOS login redirect, see iOS Setup
Android Client Id	AndroidClientId	Client Id used for the Android login redirect, see Android Setup
Disable EOS Overlay	bDisableEOSOverlay	Disables the EOS overlay. Same as the -DisableEOSOverlay command line argument

Steam Integrated Platform

Registers Steam as an Integrated Platform when the EOS platform is created (Windows, Linux and Mac). EOS then mirrors presence and sessions to Steam and follows the Steam login state.

Setting	ini key	Description
Enable Steam Integrated Platform	bEnableSteamIntegratedPlatform	Turns the integration on. Default false
Steam Major Version	SteamMajorVersion	Major version of the Steamworks SDK the game is built with. Default 1
Steam Minor Version	SteamMinorVersion	Minor version of the Steamworks SDK, for example 64 for UE 5.8 (Steamworks 1.64). Must be set, the integration is skipped while it is 0
Steam Disable Presence Mirroring	bSteamDisablePresenceMirroring	Stops EOS from copying presence to Steam
Steam Disable SDK Managed Sessions	bSteamDisableSDKManagedSessions	Stops EOS from creating Steam sessions for EOS sessions and lobbies
Steam Prefer Integrated Identity	bSteamPreferIntegratedIdentity	Shows Steam names instead of Epic names where both exist

The Steam library is managed by the game, so the Steam Online Subsystem (or your own code) must initialize Steam before EOSCore creates the platform.

ini-only Settings

These keys are not shown in Project Settings. Add them to the same section in DefaultEngine.ini.

[/Script/OnlineSubsystemEOSCore.EOSCoreSettings]
; Set to false to disable the EOSCore Online Subsystem
bEnabled=true
; Folder the EOS SDK uses for its cache (ignored on Android)
OverrideCacheDir=D:/MyGameCache
; Log level of the EOS SDK's own messages (non-Shipping builds only)
SDKLogLevel=Warning
; Seconds EOS retries network tasks before they fail
TaskNetworkTimeoutSeconds=10

ini key	Default	Description
bEnabled	true	Enables the EOSCore Online Subsystem. The older sections [/Script/EOSCore.EOSCoreSettings] and [EOSCore] are still read if this key is missing
OverrideCacheDir	User folder /CacheDir	Cache folder for the EOS SDK. Android always uses the app's internal files folder
SDKLogLevel	VeryVerbose	Off, Fatal, Error, Warning, Info, Verbose or VeryVerbose. Lower it if the EOS SDK messages flood your log. Not used in Shipping builds, where SDK logging is off
TaskNetworkTimeoutSeconds	10	How long EOS retries a network task (for example a login while offline) before the callback fails

Related Settings in Other Sections

Section	Key	Description
[OnlineSubsystem]	DefaultPlatformService=EOSCore	Makes EOSCore the default Online Subsystem, see Configuring Online Subsystem
[EOSSDK]	bHasProjectBinary=true	Makes the engine's EOS modules use the EOS SDK binary that ships with EOSCore
[Voice]	bEnabled=true	Needed for Voice Chat (OSS)