The java.net.SocketException: Connection reset error occurs when a network connection is abruptly terminated by the remote host. In the context of a Minecraft server, this typically means the connection between the client and the server was severed unexpectedly, often due to network instability, firewall interference, or server-side timeouts.
Potential Causes
- Unstable Internet Connection: Packet loss or high latency on either the client or server side.
- Firewall/Antivirus: Security software blocking the connection between the client and the server.
- Server Overload: If the server is struggling to process ticks, it may drop connections to maintain stability.
- ISP Throttling: Some ISPs may flag persistent connections as suspicious and reset them.
How to fix it
1. Check your network stability
Ensure your local internet connection is stable. If you are using a Wi-Fi connection, try switching to a wired Ethernet cable to rule out signal interference.
2. Disable security software
Temporarily disable Windows Firewall or third-party antivirus software on your local machine. If the error stops, you may need to add an exception for your Minecraft client.
3. Check server performance
If your server is lagging, it may be struggling to handle incoming packets.
On AwakeNode:
Use the File Manager to check your latest.log for "Can't keep up!" warnings. If your server is consistently overloaded, consider upgrading your plan to increase your allocated resources.
On other hosts:
Check your server console for performance warnings. If you need to adjust your startup flags or memory allocation, you will need to manually edit your server's startup script or server.properties file.
4. Contact Support
If the issue persists despite these steps, it may be a routing issue between your location and the server node.
On AwakeNode: Open a ticket with our support team. We can investigate the network path and check for any hardware-level issues on the host node.
On other hosts: Contact your hosting provider's support team and provide them with the specific timestamp of the error from your server logs.
Questions
Does this error mean my server is down?
Not necessarily. This error usually indicates a specific player's connection was dropped, rather than the entire server crashing.
Can I fix this by changing my Java memory settings?
If your server is running out of RAM, it can cause lag that leads to connection resets. On AwakeNode, you can upgrade your plan to automatically increase your memory, while on other hosts, you must manually edit your startup flags.
Should I change my server port to fix this?
Changing the port rarely fixes a connection reset error. This issue is almost always related to network stability or firewall interference rather than the port itself.