Quick answer
Confirm that everyone is on the same version, rebuild the room, try the official Steam invitation or room-code route, save the exact error, and exchange the host for comparison. These are diagnostic checks gathered from the reviewed material; none is guaranteed to fix every connection problem.
Diagnostic checks
- Compare the exact game version on every participating PC.
- Recreate the room and test again.
- Try the available Steam invitation or room-code route.
- Capture the complete error rather than paraphrasing it.
- Exchange the host and compare the result.
Community-derived checks: these help separate version, room, and host conditions. They are not official guarantees.
What v1.007 records as fixed
The patch records fixes for multiplayer machine-repair counts, customers seeing a fake fryer basket, and customers not seeing trays marked Ready to Serve.
Historical Demo note
Demo updates once addressed a “session found but can't join” case and join-by-code behavior. That history does not prove the formal release currently fails for the same reason.
Sources
- Official Steam store — Windows, online co-op, and up to six players.
- Co-op research page — diagnostic sequence, treated as third-party advice.
- v1.007 patch archive — recorded multiplayer fixes.
FAQ
Is there one guaranteed multiplayer fix?
No reliable source in the current material supports one.
Related guides
This unofficial guide reflects the sources listed above and may change as launch-week updates continue.