FTP status and error numbers

During your FTP sessions, you'll receive various numbered codes from servers. CuteFTP displays these codes in the log window. Some codes represent errors, while most codes simply communicate the status of the connection. Here are brief explanations for the most common status and error codes.

100's
200's
300's
400's
500's
10000's

Code	Description
100 Series	The requested action is being initiated, expect another reply before proceeding with a new command.
110	Restart marker reply.
120	Service ready in nn minutes.
125	Data Connection already open, transfer starting.
150	File status okay, about to open data connection.

200 Series	The requested action has been successfully completed.
200	Command okay.
202	Command not implemented, superfluous at this site.
211	System status, or system help reply.
212	Directory status.
213	File status.
214	Help message.
215	NAME system type. (Where NAME is an official system name from the list in the Assigned Numbers document.)
220	Service ready for new user.
221	Service closing control connection. Logged out if appropriate.
225	Data connection open; no transfer in progress.
226	Closing data connection. Requested file action successful (for example; file transfer or file abort).
227	Entering Passive Mode.
230	User logged in, proceed.
250	Requested file action okay, completed.
257	"PATHNAME" created.

300 Series	The command has been accepted, but the requested action is on hold, pending receipt of further information.
331	User name okay, need password.
332	Need account for login.
350	Requested file action pending further information.

400 Series	The command was not accepted and the requested action did not take place, but the error condition is temporary and the action may be requested again.
421	Error 421 Service not available, closing control connection. Error 421 User limit reached Error 421 You are not authorized to make the connection Error 421 Max connections reached Error 421 Max connections exceeded Possible Solutions You can receive that 421 error if the FTP server you are connected to limits the total number of connections available or limits the connections available to one user. There are three things you can do: Limit the number of connections to any one FTP site by selecting Tools > Global Options > Connection and set "Per site max connections /transfers" to 1 (By default it will be set to 2). Remove items from the Transfer Queue. The Transfer Queue is where you see items ready for transfer, in transit, or just transferred. Sometimes the Queue Pane can become cluttered with unfinished transfers. To clear the queue, right-click inside it and choose Remove All. Make sure only one instance of CuteFTP is running on your system. Open the Windows Task Manager and see if CuteFTP is listed more than once.
425	Can't open data connection. Try changing from PASV to PORT mode. Check your firewall settings. Try making an HTTP connection.
426	Connection closed; transfer aborted.
450	Requested file action not taken. File unavailable (e.g., file busy).
451	Requested action aborted: local error in processing.
452	Requested action not taken. Insufficient storage space in system.

500 Series	The command was not accepted and the requested action did not take place.
501	Syntax error in parameters or arguments.
502	Command not implemented. The server does not support this command.
503	Bad sequence of commands.
504	Command not implemented for that parameter.
530	Not logged in. Your password is being rejected, contact the server administrator.
532	Need account for storing files.
550	Requested action not taken. File unavailable (e.g., file not found, no access). Contact the server administrator.
552	Requested file action aborted. Exceeded storage allocation (for current directory or data set). Contact the server administrator.
553	Requested action not taken. File name not allowed. Try changing the file name, or getting rid of spaces in the file name.

10,000 series	Winsock error codes
10054	Connection reset by peer. The connection was forcibly closed by the remote host.
10060	Can't connect to remote server (Generally a time-out error). Try switching from PASV to PORT mode, or try increasing the time-out value (See Reconnect and resume in Transfer settings).
10061	Can't connect to remote server. The connection is actively refused by the server. Try switching the connection port.
10066	Directory not empty. The server will not delete this directory while there are files/folders in it.
10068	Too many users, server is full. Try connecting later. If the problem persists, Contact the server administrator.