FTP server not responding
Why FTP servers fail to respond and how to diagnose network, service, or routing problems.
Diagnose this automatically
Test whether the network port is reachable before investigating authentication problems.
Shareable output
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If an FTP server does not respond, the connection request may be dropped or the service may not be running.
Common causes
- FTP service stopped
- Firewall dropping packets
- Network routing issue
- Server overload
Fix checklist
- Verify FTP service is running.
- Check firewall rules.
- Confirm correct hostname and port.
- Test from another network.
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Live troubleshooting help for an urgent or unusually complex FTP, FTPS, or SFTP problem.
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Related
- ECONNREFUSED on port 21 — Why FTP port 21 returns connection refused, and how to isolate service-down vs firewall vs wrong host/port.
- FTP connection refused — Why FTP servers refuse connections and how to diagnose port, service, and firewall issues.
- FTP connection reset by peer — Why FTP connections reset unexpectedly and how to diagnose firewall or server termination issues.
- FTP port 21 blocked — How to diagnose and fix firewall rules blocking FTP port 21.
- TCP connection timeout (firewall issue) — Why FTP/SFTP connections time out and how to diagnose firewall, routing, or allowlist blocking.
- TCP connection failed — General TCP failure causes when connecting to FTP, FTPS, or SFTP services.
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