warningConnection ErrorsAffects: All versions
How to Fix java.net.ConnectException
Fix java.net.ConnectException by verifying server status, checking IP/port, and configuring port forwarding.
Quick Fix
Check that the server is running and the IP:port is correct. Verify firewall and port forwarding.
Error Message
java.net.ConnectException: Connection refused: no further informationHow to Fix
1
Confirm the server is running
2
Check the IP address and port number
3
Forward port 25565 on the router for home-hosted servers
4
Allow Java/Minecraft through the firewall
Common Causes
- Server not running on the specified port
- Firewall blocking the port
- Wrong IP address
- Port not forwarded
Diagnostic Steps
- Verify server is online
- Check IP and port
- Test port forwarding with a port checker tool
- Check firewall rules
FAQ
How do I test if my port is forwarded?
Use canyouseeme.org or similar port checker. Enter port 25565 while the server is running.