Assetto Corsa

Fix Assetto Corsa checksum failures without disabling checks

Car and track names can match while their files differ. Start by identifying the asset named in the rejection or server log, then install the same release on the server and affected driver’s computer.

Make the change

  1. Record the rejected car, track or layout and the versions used by a driver who can join.
  2. Back up the relevant server configuration and content before replacing anything.
  3. Compare the selected car entries and track layout with the folders actually uploaded.
  4. Re-upload the matching car data, including data.acd where supplied, from the same legitimate content release used by drivers.
  5. Restart and test that car and track combination before adding other content.

Check the result

Do not silence MissingCarChecksums as a first fix. AssettoServer distinguishes absent checksum data from a failed comparison. Keep Steam authentication enabled when using an admin SteamID whitelist.

Related guides

Assetto Corsa server not showing up or unable to connect · Assetto Corsa server settings: Startup and configuration

Documentation

Server configuration reference · Project documentation 2

Assetto CorsaGame managementGame panel
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