SFTP authentication failed
Why SFTP authentication fails and how to fix password or SSH key issues.
Diagnose this automatically
Verify whether authentication is the actual failure point.
Shareable output
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Authentication failures occur when the SFTP server rejects the login credentials.
Common causes
- Incorrect password
- Missing SSH key
- Invalid key permissions
- Account restrictions
Fix checklist
- Verify username and password.
- Confirm SSH key is installed server-side.
- Check permissions on ~/.ssh directory.
- Confirm IP allowlist restrictions.
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Related
- SFTP permission denied — Why SFTP returns permission denied errors and how to fix file or directory permissions.
- SFTP host key verification failed — Why SSH host key verification fails and how to resolve known_hosts conflicts.
- SFTP subsystem request failed — Why SFTP subsystem requests fail and how to configure SSH servers correctly.
- SFTP key authentication required — Why SFTP servers require SSH key authentication and how to configure keys correctly.
- Authentication failed — Why FTP/SFTP authentication fails and how to correct credential, key, and account policy issues.
- SFTP directory listing failed — Why SFTP connects but cannot list directories, and how to fix path, permissions, and chroot issues.
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