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FTP anonymous login disabled

Why FTP anonymous login fails and how to configure server access policies.

Diagnose this automatically

Verify whether authentication is the actual failure point.

terminal
npx ftpmonitor check --protocol ftp --host ftp.example.com --port 21 --username user --password pass
Shareable output
terminal
npx ftpmonitor check --protocol ftp --host ftp.example.com --port 21 --username user --password pass --format slack --copy

Prefer the browser? Run the same check on the homepage.

Some FTP servers disable anonymous access for security reasons.

Common causes

  • Anonymous access disabled
  • Server requires authenticated user
  • Account policy restrictions

Fix checklist

  1. Create authenticated FTP user.
  2. Enable anonymous access if required.
  3. Verify server policy configuration.
Related
  • FTP 530 Login incorrect — How to fix FTP 530 errors: bad credentials, account restrictions, FTPS requirements, and permission issues.
  • FTP login failed — Why FTP login attempts fail and how to resolve credential or account issues.
  • Authentication failed — Why FTP/SFTP authentication fails and how to correct credential, key, and account policy issues.
  • FTP passive mode firewall issues — Why FTP PASV fails behind firewalls/NAT and how to configure passive ports correctly.
  • 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.
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