If you are encountering a Violation type 2 Error code / EAC index access error message, this can be resolved by editing the files related to ArcheAge's EasyAntiCheat.
Please open easyanticheat\certificates in your game folder with Windows File Explorer (KakaoGames\ArcheAge\easyanticheat\certificates by default).
There you should be able to locate only two files: base.bin and base.cer - DO NOT DELETE OR MODIFY THEM.
If you see any additional files or folders there (for example: game.bin and/or game.cfg), please do the following:
- Close any ArcheAge instance that is currently running (close the game).
- Delete any additional folders or files (for example: game.bin and/or game.cfg) and please make sure that you don't modify or delete base.bin and base.cer.
- Re-launch ArcheAge.
This should fix the error at hand.