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If your American Truck Simulator server won’t start, check that server_packages.sii and server_packages.dat are both in .local/share/American Truck Simulator (the server won’t start without them) and read server.log.txt and server.crash.txt in the same folder. If settings reset, you edited a key the panel writes on every start: change the lobby name and Steam token on Startup instead.

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Why won’t my ATS server start?

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How to read the server log

1

Open the folder

Open Files > .local > share > American Truck Simulator.
2

Open the logs

Open server.log.txt. If the server crashed, also look for server.crash.txt.
3

Read the last lines

The newest lines at the end usually name the file or setting that failed.
You can also read the console or server logs in the panel.

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Why do my server_config.sii changes reset?

The panel writes four keys into server_config.sii every time the server starts: Every other key, such as password, max_players, description, welcome_message, moderator_list and the gameplay settings, stays as you saved it. We tested this on 30 October 2026. Also stop the server before you edit the file. Changes apply on the next start.

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How to undo a bad change

Restore a backup, or fix the line by hand. The defaults of a new server are listed in server_config.sii explained, so you can compare your file line by line.

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Frequently asked questions

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My Startup change didn’t apply. Why?

Startup fields save when you click outside them, and they apply on the next start. Restart the server after changing them.

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Can I delete server_packages to go back to the base map?

No. Without the server packages the server won’t start. Upload packages exported from a profile without mods instead, or restore a backup.

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What does “Steam disconnected” mean?

SCS documents that the server closes when it loses its connection to Steam. Start it again; if it keeps happening, open a ticket.

ATS server guide

Every ATS page in one place.

server_config.sii explained

Every setting and its limit.

Export server packages

Make new package files.

Not showing in the list

Running but can’t be found.

Backups

Undo a bad change.
Tested by the FREAKHOSTING team on our Game Panel on 30 October 2026 (American Truck Simulator dedicated server 1.61s) and checked against the official SCS dedicated server documentation. Steps may differ slightly if the game changes.

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Need Extra Help?

If you encounter any issues, our support team is ready to assist:

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Last Updated: October 2026