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Connection Reset

Players drop with 'Connection reset by peer'. The network connection was abruptly closed by the other side or an intermediary, this is a connectivity problem rather than a Minecraft fault.

What does this error mean?
'Connection reset by peer' is a TCP-level message meaning the remote end (or a device in between) closed the socket unexpectedly. It typically points to network instability, a firewall, or a proxy dropping the connection. 
Connection reset by peer
Most Common Causes
  • Network instability or packet loss.
  • A firewall or security tool resetting connections.
  • A proxy/anti-DDoS layer dropping traffic.
  • An ISP or routing problem between player and host.
  • Server-side freezes causing the client to give up.
How To Diagnose
  1. Check whether one player or all players are affected.
  2. Run a ping/MTR to look for loss along the path.
  3. Temporarily relax firewall rules to test.
  4. Look for server freezes around the disconnect time.
Recommended Fixes
  • Stabilize the network
    Address packet loss and routing issues between players and the host.
  • Adjust firewall/proxy
    Make sure security or anti-DDoS layers are not resetting valid connections.
  • Keep the server responsive
    Eliminate long freezes/GC pauses that can trigger resets.
  • Test without a VPN
    Have the affected player try without a VPN/proxy to rule it out.
Analyze My Log
Frequently Asked Questions

No, this is purely a network connection issue.

Suspect the host's network, firewall, or proxy layer rather than individual players.

An MTR over a minute or two will show where packets are being dropped.