"It is not a valid executable file." The error message is displayed when the Dekaron game executable file is damaged, and Dekaron must be reinstalled.
Please select the Dekaron client in which the error occurred in Control Panel > Uninstall Program and delete it.
Once deletion is complete, please download the installation file from the Dekaron website data room, install the client, and run the game again.
※ Damage to the game executable file may be caused by viruses, etc., and it is recommended that you update and scan your anti-virus program before downloading the installation file.