Steam Version

1. Right-click on *Watch Dogs: Legion* in Steam and select Properties.

2. Under the General tab, in the launch options field, enter -BattlEyeLauncher (note that there is a space before the parameter).

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Uplay Version

1. In your Uplay game library, right-click on the game, then select Manage > Properties.  

2. Under the General section, add the launch parameter -BattlEyeLauncher (note the space before it), then click Save.