ROB RUN Error Codes

Updated Nov 12, 2026, 00:40 UTC

ROB RUN error codes run from E-0101 to E-0904, grouped by cause: network, game files, account, anti-cheat and other. E-01xx and E-02xx codes can mean the servers are down, so check the live status first. Below is every code Kefir lists, explained in plain English with a fix checklist and what other players found.

Network and data errors

Code	What it means
E-0101 / E-0110	The game could not reach ROB RUN’s servers to download the settings and startup data it needs before the menu appears.
E-0102	Startup data arrived damaged or was blocked before it reached your PC. Guest networks (hotels, cafes, public Wi-Fi) and antivirus or firewall filtering are the usual causes.
E-0124	The game’s asset loader failed, which normally points to damaged or missing game files.
E-0201	You were already in the game when the connection to the game server dropped and could not be re-established.

Game version and files errors

Code	What it means
E-0301 / E-0302	Your game client is out of date.
E-0303 / E-0304	Downloaded game data is corrupted or does not match the current version of the game.

Account and authorization errors

Code	What it means
E-0401	The game could not confirm your Steam account.
E-0403 / E-0404	Sign-in through Epic Online Services, which the game uses behind the scenes, failed.
E-0405	Steam did not respond, or your antivirus blocked one of the game’s system files.

Anti-cheat errors

Code	What it means
E-0501 / E-0502	Easy Anti-Cheat is not running, is damaged, or is being blocked by another program.

Other errors

Code	What it means
E-0601	The game found no keyboard or mouse. It usually happens over Remote Desktop or a cloud streaming service.
E-0904	A catch-all code for an unexpected error inside the game. The text in the error window says what actually failed.