How to Fix a Satisfactory Server That Keeps Crashing
Satisfactory server crashes are usually one of a handful of known causes — an autosave memory spike, a corrupted save, a mod version mismatch, or a circuit/blueprint pathing desync. Here's how to diagnose and fix each one.
Autosave memory spike pushes the server over its RAM ceiling
During autosave, the server temporarily needs 2-4 GB above its normal baseline to serialize the world state. If you're already running near your memory ceiling, the autosave itself is what pushes it over and crashes the server — not whatever you were doing at the time. Fix: budget 2-4 GB of headroom above your factory's steady-state usage, not just enough to cover normal play.
Save file corruption or a save too large for allocated RAM
A crash specifically on startup, rather than during play, usually means the save file itself is corrupted or has grown too large for the RAM you've allocated to load it. Fix: restore from an earlier autosave backup, and size RAM to the save file's actual disk size, not just your player count.
Mod version mismatch between players and server
If the server runs mods, every connecting player's mod set must match the server's exactly, including versions — a mismatch is one of the most common causes of what looks like a crash but is actually a failed load/connection handshake. Fix: pin exact mod versions and have players verify their list matches before connecting.
Circuit or blueprint pathing desync
Placing or deleting a large blueprint or power circuit can push the circuit and pathing subsystems into an inconsistent state; a tick later, the server crashes trying to reconcile it — often showing an EXCEPTION_ACCESS_VIOLATION in the log. Fix: place and delete large blueprints and circuits incrementally rather than all at once, and save immediately after large builds.
Too little RAM for a large, late-game factory
A sprawling late-game factory with many players needs significantly more than the entry-level minimum. Fix: scale RAM up as your factory grows — don't assume the RAM that worked at hour 10 still works at hour 100.
Corrupted save from a bad shutdown
Killing the server process instead of a graceful stop during a save can corrupt the save file, crashing on the next boot. Fix: restore from the automatic save or backup, and always allow a graceful shutdown.
FAQ
Why does my Satisfactory server crash specifically during autosave?+
My server crashes on startup but not during play — what does that mean?+
Can mismatched mods cause a crash?+
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