Rust "Disconnected by EAC" or EAC authentication errors

Rust EAC kicks are almost always a problem on the player's machine. The fix is to re-install EAC from the Rust folder; the server side updates on its own.

A Rust client message of EasyAntiCheat: Disconnected by EAC, Failed to authenticate with EasyAntiCheat, or Kicked: EAC: Authentication timed out is almost always a problem on the player's machine, not the server. On Hostd, the server-side EAC integration is kept current automatically; the things that kick a player are almost all client-side.

Re-install EAC on the player's machine

Tell the player to:

Close Rust.
Open Steam → Library → right-click Rust → Manage → Browse local files.
Open the EasyAntiCheat folder.
Run EasyAntiCheat_Setup.exe and pick Install even if it offers Repair.
Restart Rust and try again.

This re-registers the EAC service on Windows. It clears about 80% of EAC kicks on its own.

If the install repair does not fix it

The next checks, in order:

Windows Game Bar sometimes hooks the Rust process in a way EAC does not like. Open Settings → Gaming → Game Bar → disable.
Anti-virus and Windows Defender can quarantine the EAC executable. Whitelist the Rust folder.
Out of date Windows. EAC depends on a current Windows install; if the player is on a build older than a year, suggest a Windows Update pass.
Discord overlay, MSI Afterburner, RTSS, ReShade. Overlays and injectors trip EAC. Disable all overlays during the Rust session.

When it is the server

Rare but possible: after a Rust patch (Force Wipe, the first Thursday of the month, is the riskiest window), the server EAC integration can lag the new client by a couple of hours. Symptom: every player gets the same kick at the same time on a freshly patched server. Wait for the patch storm to settle, restart the server once Oxide or Carbon publish their matching build, and EAC clears up.

The dashboard image pulls in new EAC builds automatically as part of Rust updates; you should not need to do anything on your side.

Where to go next

Rust server troubleshooting for the broader Rust crash and connectivity flow.
Oxide plugins and the wipe scheduler if the patch storm context above sounds relevant.

Last updated 2026-05-23. Notice a mistake? Tell us.