Subnautica 2 Server Troubleshooting Guide
Solve common Subnautica 2 dedicated server issues with these troubleshooting steps.
🔧 Quick Checks
- Verify server is updated
- Check network connectivity
- Review server logs
- Restart server and clients
Connection Issues
Cannot Join Host Session
Subnautica 2 co-op is host-based, so most "can't connect" problems are about the host session rather than a dedicated server.
Causes:
- Host has left the session, so the world is offline
- Crossplay disabled at the platform-network level (PC or Xbox account setting)
- Host machine firewall or unstable connection
Solutions:
- Confirm the host is in the world (or use an always-online managed session)
- Enable cross-network play in the PC/Xbox account settings of each player
- Re-send the invite and confirm both players are on the same client version
High Latency
Solutions:
- Check network quality
- Reduce player count
- Upgrade hardware
- Choose closer server location
Performance Issues
Server Lag
Causes:
- Insufficient RAM/CPU
- High player count
- Large structures
Solutions:
- Upgrade hardware
- Reduce max players
- Optimize world generation
Startup Issues
Server Won't Start
Solutions:
- Check logs for errors
- Verify config files
- Ensure sufficient disk space
- Reinstall if files corrupted
Frequently Asked Questions
Where are server logs?
In the Saved/Logs directory in server folder.
How to reset world?
Delete SaveGames folder to generate new world.
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