Microsoft FTP Error CodesIn Feburary 2016 24,

In Feburary 2016 24,
Error code 426 happens when you're uploading or downloading to an FTP site and the transfer aborted. The error would say, 'Connection closed, transfer aborted.' It could mean that the connection was made in a passive mode: Your computer tried to connect to the server through a random port, but was blocked by the server's firewall. It could also mean that a firewall in your computer blocked the session. When you get this error, ensure that no firewall is blocking the connection.
Error Code 530
This error code means that FTP authentication was not successful. The combination of the username and password you've typed was incorrect, thus you were denied access to the FTP site. It could also mean a misconfiguration in IIS: You've allowed only anonymous access for FTP, but denied anonymous access for all IIS services. Verify that the username and password you used is correct or check if anonymous access is allowed by leaving the username and password options blank.
Error Code 550
This error is generated when you're downloading or uploading a file to the FTP site. When you're attempting to download a file and you get a 550 error, it means that the file you're downloading is no longer in the FTP directory. When you're uploading, it means that you do not have the right access to upload a file to the FTP site. Verifying that the file exists or that you have the proper access to put files in the FTP site eliminates this error.
Other 4xx Error Codes
Error codes that start in 4 mean that the error is temporary. Trying again at a later time and ensuring that there is enough disk space and that nothing is interfering with the connection will often resolve the error.421: The FTP service is not available at the moment. It can be because the maximum FTP connection is reached or you are not authorized to connect through FTP.425: You cannot open a connection. A firewall could be blocking the connection or the type of connection you're trying is not allowed. Try different methods of FTP connection such as having FTP software or connecting to FTP through HTTP.450: The file you're trying to access cannot be copied. Other users or programs may be using the file, causing it to lock. You can try again later to see if the file has been released.451: There was an error in the command typed for the FTP connection. Ensure that the commands you typed are correct.452: Not enough disk space exists in the hard drive that you're downloading or uploading the file. Cleaning up the hard drive resolves this issue.
Other 5xx Error Codes
Error codes that start in 5 mean that the error is permanent. Retrying will only result with the same error.500: A syntax error could mean that the command line is too long. Try either the FTP passive or active mode depending on the mode you're currently using.501: There was an error with the command you typed. You may have missed or mistyped some characters.503: The commands you typed were not in the proper sequence.504: There was an error in the parameter with the command. Make sure that the parameter you entered is valid for the command.532: You do not have the proper access to store files remotely.552: There's not enough space on the server that you're remotely saving the file. 553: The file you're uploading has invalid characters. Renaming the file resolves the issue.
In Feburary 2016 24,