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You as a sysadmin know that for sure – login errors, syntax errors, connection errors, timeout errors, bandwidth errors, and others.
Many FTP users come across error message 550. As all 5xx errors, the “550 No such file or directory” error message is a permanent negative completion reply status of the FTP server. The requested action could not be processed, because the command was not accepted by the server. This problem has several possible causes, for example access restrictions for the requested file, an incorrect path, or mounted file systems.
To get rid of FTP error 550, check the path that you are using is correct and leads you to the requested file. If this is not the case, try using the absolute path of the file. If the error persists, check the mount points and make sure that the file system exists and that you have the permission to access it.
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The common FTP error 530 occurs when the user is trying to connect to the FTP server. It may occur with both anonymous and basic authentication and is usually accompanied by an error message such as “user cannot log in, home directory inaccessible” or “critical error: could not connect to server”.
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Are you facing FTP return code 425 or the error message “can’t open data connection”? Then you are dealing with a protocol level error stating that the data connection could not be established. This could be either the connection for a directory, for an upload, or for a download.
To fix the problem, try to change the settings for the active and passive mode. If this does not help, the FTP error 425 is probably caused by the SSL requirements on the server or by firewall settings. In this case, make sure that all settings are correct and that the firewall allows incoming connections on the correct port.
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The FTP error “ECONNREFUSED” indicates a failed connection to the FTP server.
Best solutions:
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Another common FTP error is error 421 along with the error message “service not available.” This return code lets you know that there was a problem with the connection and your requested action. The range of 4xx errors are temporary conditions, meaning that the action may be requested again.
The most common reasons for error 421 to show up are invalid FTP hosts, firewall and anti-virus software restrictions, and service configuration errors.
Best solution:
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Timeout errors are common FTP return codes. The errors are indicated by messages such as “Connection times out after 20 seconds of inactivity.” If you are facing a time out error in your FTP client log, here is what you can do to solve the problem:
Go to the settings and change the connection timeout duration, for example from the default 20 seconds to 100 seconds. By increasing the duration, the server has more time to establish a connection before timing out. If the error persists, check for different possible causes. Depending on the cause, changing from passive to active mode, or vice-versa, can help you get rid of the problem. You can also try switching from SFTP to FTP, or to change the configuration settings in the FTP client account.
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A failed EAI is a common problem among users of FileZilla or other FTP applications. The EAI errors are indicated by either of the two error codes “EAI_NODATA” or “EAI_NONAME.” Both errors lead to the result “Could not connect to server.”
Fortunately, there is a quick fix for the problem.
Best solution:
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Are you facing the FTP login message “Your bandwidth usage is restricted”? Then you are dealing with a bandwidth restriction for all FTP connections to the server. This is a restriction that cannot be changed by the user. The limited bandwidth usage prevents FTP transfers from slowing down by using too much of the network’s bandwidth.
Best solution:
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The FTP command ftp put uploads a file to the FTP server. During this process, an error can occur. If the FTP put/get fails to complete, this can be caused by an interruption of the connection, by a time out, or by the server not responding.
Best solution:
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Both FTP error 10060 and error code 10061 refer to a problem with the connection to the remote server. In the case of error 10061, the connection is actively refused by the server. It is often difficult to find the causes of these types of FTP problems. However, some reasons cause this error more often than others, and can be fixed easily.
FTP errors 10060 and 10061 can also be caused by a timeout. Change the timeout limit in the settings to make sure that the server has enough time to process your command and to send larger files.
Best solution:
Switch to PRTG: PRTG all-in-one FTP monitoring software effectively monitors the performance of FTP servers via encrypted and unencrypted server connections, measures response time, and reports problems.
Find out how PRTG’s monitoring can help you get rid of FTP errors
PRTG effectively monitors the performance of FTP servers
PRTG monitors via encrypted and unencrypted server connections
PRTG counts files, measures response time, and reports problems
