---
title: "Troubleshooting FileZilla Error Logs"
description: "When you are experiencing issues using FileZilla to connect via FTP, you can review the error logs for common problems. In this guide we will discuss the cause and solution of FileZilla errors...."
url: https://www.inmotionhosting.com/support/website/error-numbers/troubleshoot-filezilla-error-logs/
date: 2015-01-02
modified: 2022-05-12
author: "InMotion Hosting Contributor"
categories: ["FTP", "Website Error Numbers"]
type: post
lang: en
---

# Troubleshooting FileZilla Error Logs

When you are experiencing issues using **FileZilla** to connect via **FTP**, you can review the **error logs** for common problems. In this guide we will discuss the cause and solution of FileZilla errors. [Enabling error logging in FileZilla](https://www.inmotionhosting.com/support/website/ftp/enable-filezilla-logging/), allows you to save errors in a text file, and view them when needed.

In this article, we will cover the basics of **troubleshooting FileZilla error logs**.

- [530 Login Authentication Failed](#530-error)
- [500 Unrecognized Command](#500-error)
- [EAI_NONAME – Neither nodename nor servname provided, or not known](#missing-domain)
- [421 Too Many Connections](#421-error)

## Response: 530 Login authentication failed

Response: 530 Login authentication failed
Error: Critical error
Error: Could not connect to server

This error is caused by an *incorrect* **username**, or **password**.

- Check your FTP username/password for spelling errors.
- [Reset your FTP password](https://www.inmotionhosting.com/support/edu/cpanel/resetting-your-ftp-password-in-cpanel/)

## Response: 500 unrecognized command

Response: 500 unrecognized command
Error: Could not connect to server

In my tests, this error is caused by an incorrect **port** setting.

- Check that you are using **port 21**.

## Status: Connection attempt failed with “EAI_NONAME – Neither nodename nor servname provided, or not known”.

Status: Connection attempt failed with "EAI_NONAME - Neither nodename nor servname provided, or not known".
Error: Could not connect to server

This error occurs when you enter a **hostname** that does not exist. There are several things you can do to fix this problem.

- Review the hostname for spelling mistakes.
- Make sure you [registered the Domain](https://www.inmotionhosting.com/support/domain-names/registering-a-new-domain-name/)
- Ensure the domain is [pointed to InMotion Hosting](https://www.inmotionhosting.com/support/edu/cpanel/dns-and-nameserver-changes/).
- Rule out [propagation](https://www.inmotionhosting.com/support/domain-names/dns-nameserver-changes/complete-guide-to-dns-records/).
- Use the [Shared SSL](https://www.inmotionhosting.com/support/website/ssl/how-does-the-shared-ssl-work/) instead.

We also have some additional troubleshooting information in our community forum: [Connection Attempt Failed With “eai_noname – Neither Nodename nor Servname Provided, or Not Known”](https://www.inmotionhosting.com/support/questions/en/communities/1/topics/15678-filezilla-connection-attempt-failed-eai-noname-neither-nodename-nor-servname-provided-or-not-known)

## 421 Too Many Connections

If you are getting this error, check out our full guide on [421 Too many connections](https://www.inmotionhosting.com/support/website/ftp/too-many-simultaneous-connections/).

Congratulations, now you know how to troubleshoot error logs in FileZilla!