How to Troubleshoot Common FileZilla FTP Connection Errors

FileZilla is a widely used cross-platform FTP client that transfers files between a local computer and a remote server. While it is an excellent tool for managing, backing up, and transferring website files to and from a server, sometimes users encounter problems when establishing a connection. Fortunately, many of these issues can be resolved with some troubleshooting.

This article provides a guide on troubleshooting common FileZilla FTP connection errors and discusses what FileZilla is and its common use cases. Whether you are a beginner or an experienced user, you will be equipped with the knowledge to troubleshoot connection problems and ensure a smooth and seamless experience when using FileZilla for file transfers.

What is FileZilla?

FileZilla is a free and open-source, cross-platform FTP client allowing users to transfer files between a local computer and a remote server. It is available for Windows, Mac, and Linux operating systems and supports various file transfer protocols, including FTP, FTPS, and SFTP. (If you’re unsure between FTP vs. SFTP)

FileZilla is a popular choice for website owners and developers for effective file management. It provides a user-friendly interface to drag and drop files, queue multiple transfers, and monitor progress.

In addition to its file transfer capabilities, FileZilla also supports advanced features such as remote file editing, directory comparison, and file search. Users can save and manage multiple server profiles and customize settings to suit their needs.

Overall, FileZilla is a reliable and versatile FTP client suitable for novice and advanced users. Its ease of use, advanced features, and cross-platform compatibility make it a go-to client among IT professionals.

FileZilla FTP Connection Use Cases

FileZilla is commonly used for various file management purposes. Here are some use cases for FileZilla FTP Connections.

Uploading and Downloading Files

If you need to upload a new version of your website or download a database backup, FileZilla makes it easy to do so. FileZilla accomplishes this with its user-friendly interface. It provides an easy-to-use drag-and-drop interface, making uploading and downloading files simple.

FileZilla also allows you to queue multiple transfers and monitor progress to keep track of all your file transfers in one place. Additionally, the support for multiple file transfer protocols makes it a versatile tool for all your file transfer needs.

Managing Website Files

FileZilla is an excellent tool for managing website files hosted on an FTP server, allowing easy upload, download, and editing of files directly on the server. This functionality means system administrators and developers can quickly make website changes without having to download files to their local computers and then upload them to the server manually.

With FileZilla, users can see the directory structure of your server, making it easy to navigate through your website folders and files. You can compare files and directories to view changes quickly, and the software comes with a powerful search function that helps you find specific files or folders.

These file management tools are compelling for web developers who need to modify code on the server. They can edit files directly on the server and test changes in real time, streamlining the development process.

Backing Up Files

Another use case for FileZilla is backing up files to an FTP server. This functionality ensures that users have a secure and reliable backup of their files in the case of any local storage or computer issues.

FileZilla also makes it easy to automate backups by scheduling regular transfers to the FTP server. This feature creates redundancy since users always have the latest version of their files backed up without manual intervention.

In addition to providing a secure backup solution, FileZilla allows users to access their backed-up files from anywhere with an internet connection. That access is handy for users who require access to their files on the go or from multiple devices.

Common FileZilla FTP Connection Errors and How to Fix Them

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

This error occurs when FileZilla cannot resolve the FTP server’s hostname.

One way to fix the Connection attempt failed with “EAI_NONAME – Neither nodename nor servname provided, or not known” error is to ensure that the server hostname is correct. You may need to use the hostname you set up or determine if your hosting provider creates a separate hostname for FTP.

Additionally, ensure your DNS propogates appropriately and any changes you have made are in effect. If you are still experiencing issues, try flushing your DNS cache.

This error occurs when the username and password combination you entered is incorrect. To fix this error, double-check your login credentials, including the username and password, and try again. If you are still experiencing issues, contact your hosting provider for further assistance.

#3. Connection timed out – Failed to retrieve directory listing

This error occurs when FileZilla cannot establish a connection with the server or retrieve the directory listing. There are a couple of options for fixing this error.

First, try increasing the timeout settings in FileZilla.

From the menu bar, click Edit.
In the drop-down menu, click Settings.
If not already defaulted, click Connections.
You can increase the timeout setting or put 0 to never timeout.

The next option is to check if your firewall is blocking the connection. Try disabling the firewall for a specified length of time to determine if it is hindering the connection.You can also run FileZilla in Passive Mode, though the client does not control the server’s port for data connection. If you must run Active mode, you must configure the client’s network when setting up the FileZilla.

#4. 421 Sorry, cleartext sessions are not accepted on this server

This error occurs when the server does not support unencrypted FTP connections. To fix this error, change your FTP settings in FileZilla to use FTPS or SFTP.

From the menu bar, click File.
In the drop-down menu, click Site Manager.
Locate the hostname for the server you wish to configure and select it.
On the General tab next to Protocol, click the drop-down menu and select the protocol you wish to use that is not just FTP.

#5. 331 User OK. Password required

This error occurs when the server requires a password to complete authentication. Either the password was not entered or it was entered incorrectly. To fix this error, enter the correct password for your account.

#6. FileZilla timeout after 20 seconds of inactivity

This error occurs when the connection timed out due to inactivity. To fix this error, try increasing the timeout settings in FileZilla.

From the menu bar, click Edit.
In the drop-down menu, click Settings.
If not already defaulted, click Connections.
You can increase the timeout setting or put 0 to never timeout.

#7. 500 unrecognized command

This error occurs when the server does not recognize the FTP command sent by FileZilla. In most cases, the port being used for the FTP connection is incorrect. Verify that you are using the appropriate port for the protocol you are using and update it via Site Manager if necessary.

Conclusion

By following these troubleshooting steps, you should be able to resolve common FileZilla FTP connection errors. If you are still experiencing issues, contact your system administrator or hosting provider for further assistance.

It is best practice to double-check your login credentials, IP address, and DNS before trying any additional troubleshooting steps. Also, confirm the network configuration, including port and protocol selections, to minimize errors.

Ronald Caldwell

Ron is a published Technical Writer with 9+ years of experience in Technology. He obtained an Associate of Science in Computer Science from Prairie State College in 2015. He is happily married to his high school sweetheart and lives in Michigan with her and their children.