Can't do Russian!! (Rust)

And search tried to use?,enough 5 seconds. use the first 3 search on your error
https://otvet.mail.ru/question/189583014
https://steamcommunity.com/app/252490/discussions/0/352792037314381588/
https://4cheat.ru/showthread.php?t=87666
Try to run rust with administrator rights;
If appears again, remove the file in error(client.cfg),check the integrity of files in steam'e.
Literal translation - the game access is denied to this file(client.cfg),which basically stores the settings of the game.This file contains the same settings in the settings tab of the game itself,only in a simplified form (resolution,range,quality)that and in the game itself,it is not necessary to enter the language of the game.