Commandline Arguments

There are several commandline arguments that the plugin can use

Available Arguments

• -AUTH_TYPE=xxx
  Logs in the first local player automatically when the Online Subsystem starts, see the supported types below. Not used on dedicated server builds (UE_SERVER).
• -AUTH_LOGIN=xxx
  Login Id used by the automatic login, for example the DevTool host address
• -AUTH_TOKEN=xxx
  Token or password used by the automatic login. If it is not set, -AUTH_PASSWORD= is used instead (this is what the Epic Games Launcher passes)
• -EOSConfig=configurationName
  Use this configuration from Project Settings instead of the Default Configuration Name
• -epicsandboxid=xxx
  Overrides the SandboxId of the selected configuration (passed by the Epic Games Launcher)
• -epicdeploymentid=xxx
  Overrides the DeploymentId of the selected configuration
• -EpicPortal
  Tells the plugin the game was started by the Epic Games Launcher, this enables the Online Subsystem Store/Purchase interface
• -DisableEOSOverlay
  Disables the EOS overlay (same as bDisableEOSOverlay in Project Settings)
• -Port=xxxx
  Game port. The Online Subsystem writes it to the session as the ServerPort attribute so clients connect to the right port

Supported AUTH_TYPE values

The value is not case sensitive. An unknown value makes the automatic login fail with an error in the log.

AUTH_TYPE	Login method
devtool or developer	DevTool, AUTH_LOGIN is the DevTool host (localhost:1111), AUTH_TOKEN is the credential name
persistentauth or autologin	Previously saved login on this computer (Persistent Auth)
portal or accountportal	Account Portal (EOS overlay or browser)
exchangecode	Exchange code, used when started from the Epic Games Launcher
deviceid	DeviceId, AUTH_LOGIN is the display name
password	Email and password (restricted by Epic, not generally available)
devicecode	Device code
refreshtoken	Refresh token
external or externalauth	External auth

Example Usage

• Logging in to your instance of DevTool at localhost:1111

"C:\Program Files\Epic Games\UE_5.6\Engine\Binaries\Win64\UnrealEditor.exe" "C:\EOSProject\EOSProject.uproject" -game -log -AUTH_TYPE=devtool -AUTH_LOGIN=localhost:1111 -AUTH_TOKEN=MrX

Auto-Login with previously saved credentials

"C:\Program Files\Epic Games\UE_5.6\Engine\Binaries\Win64\UnrealEditor.exe" "C:\EOSProject\EOSProject.uproject" -game -log -AUTH_TYPE=autologin

Using a different configuration

MyGame.exe -EOSConfig=ServerConfig