Rust error codes and crash fixes
Every error, crash and connection failure we have a fix for, one page per code. Before the fix, each page says whether the problem is your machine or the studio's servers — because if it's theirs, no amount of verifying game files will help, and the only useful answer is whether it's happening right now.
9 pages · last checked October 10, 2026
Things you can fix
Crashes, install faults and driver conflicts. Find your symptom, work the steps in order, stop when it launches.
Rust "EAC Authentication Timeout": how to fix it
Rust shows an Easy Anti-Cheat "Authentication Timeout" error when you try to connect to a server.
Rust server list empty or "No servers showing": fixes
The in-game server browser shows few servers, or none, or is missing the servers you normally play on.
Rust "EAC: Disconnected" error: how to fix it
Rust disconnects you from a server with an Easy Anti-Cheat "Disconnected" error.
Rust "Disconnected: EAC: Client Integrity Violation" fix
Easy Anti-Cheat disconnects you with "Client Integrity Violation".
Rust "Steam not open?" startup error: how to fix it
Rust shows a "Steam not open?" error at startup.
Rust "Network DNS Error" (download.eac-cdn.com): fix
Rust shows a "Network DNS Error" saying it could not resolve the address download.eac-cdn.com.
Rust EAC "Start Service Failed" error: fix by error number
Launching Rust shows an Easy Anti-Cheat "Start Service Failed" error with a number in brackets, such as (5), (1053), (1058), (1450), (31) or (1056).
Rust "Untrusted System File" error: how to fix it
Rust shows an "Untrusted System File" error.
Rust crashes joining a server at "Spawning map" (fix)
Rust loads for a while after you pick a server, stalls at "Spawning map" or "spawn world", then crashes to desktop.
Things you cannot
Queues, capacity limits and login failures. These are server-side — every page below links back to live status rather than a fix you can perform yourself.
None logged yet — check back as reports come in.
How these are graded
Every fix step carries a label. Confirmed means players demonstrably got back in with it, or the studio said so directly.Reported means it worked for some people and not others. Unconfirmed means it's circulating and there's no evidence either way yet. The distinction is the point — a page that lists five fixes with equal confidence costs you an evening.