Hello, I've been having this problem for a while now, I can launch Arma3 through the Arma3.exe normally, but it wont let me use any mods or change any setting or configurations. Everytime I try to execute the new Arma3Launcher.exe or run through Steam, it gives the error Corrupted Configuration It looks that the application configuration file is missing or is corrupted. Please use Steam to re-download or repair corrupted file (Verify integrity of the game cache). File with emergency log was placed on you desktop 'E:\users\Fernando\Desktop\Arma3Launcher_EmergencyLog_201 50724T170859_Fernando.txt' Message: The system of configuration has failed to initialize. Message: Section of configuration not recognized appSettings. File name: 'F:\Program Files\Steam\SteamApps\common\Arma 3\arma3launcher.exe.Config Line 11 Here you can see the Emergy log it generated: Here you can take a look at the Arma3Launcher.exe.Config List of what I've tried already: Verifying the came cache. Clean reinstall it Run as administrator Disable anti-virus Deleting Arma3Launcher.Exe.Config Can anybody help with this please?