Goal

Resolve common errors when clients cannot connect to your server.

Symptoms

• Connecting failed. Failed to connect to server
• Connection refused by server
• Server console shows Could not start resource or license key warnings

Steps

1. Verify server is listening

   sudo ss -tulpn | grep 30120
   Ensure both TCP and UDP are open.
2. Check license key
   • Confirm sv_licenseKey is set in server.cfg
   • Generate keys at keymaster.fivem.net
3. Inspect firewall

   sudo ufw allow 30120/tcp
   sudo ufw allow 30120/udp
4. Review server logs Look for missing resources or database errors in the console.

Verification

• Clients reach the Connecting to server screen without errors
• No connection refused messages in console

See also

• Linux Install
• Jobs
• Cfx.re Connection Guide

Next steps

If issues persist, capture full server logs and ask in GitHub Discussions.