Once you’ve resolved the FTP 421 error look through these other FTP articles in the FTP category to see if they can help as well. In that case, you may need to switch off/on your modem/router and/or reboot your computer. Click the button twice to drop that connection.Īfter doing the above steps and you still get the error “FTP error 421: Too many connections (8) from this IP”, there are possibilities that your modem or computer is caching or maintaining the connections before it actually times out. In order to close the IDLE connections, you will see a disconnect button next to each connection in the Actions column. If you are not able to see, just press the “Reload” button. You will see the current connections listed there. For that access cPanel -> Files -> FTP Connections. Response: MLST type* size* sizd* modify* UNIX.mode* UNIX.uid* UNIX.You can also flush Non-active FTP connections from cPanel if you still see issues. Trace: CFileZillaEnginePrivate::ResetOperation(2) Trace: CFtpControlSocket::ParseSubcommandResult(2)Įrror: Failed to retrieve directory listing Trace: CFtpControlSocket::ResetOperation(2) Trace: CTransferSocket::OnReceive(), m_transferMode=0 Trace: CFtpControlSocket::TransferParseResponse() Trace: CFtpControlSocket::ListSubcommandResult() Trace: CFtpControlSocket::ParseSubcommandResult(0) Response: 257 "/" is your current location Trace: CFtpControlSocket::ChangeDirSend() Trace: CFileZillaEnginePrivate::ResetOperation(0) Trace: CFtpControlSocket::ResetOperation(0) Response: MLST type* size* sizd* modify* UNIX.mode* UNIX.uid* UNIX.gid* unique* Response: 230-User userhas group access to: user Trace: CFtpControlSocket::SendNextCommand()Ĭommand: USER CFtpControlSocket::OnReceive() Status: Connection established, waiting for welcome message. Status: Resolving address of proxyserver.local Please note for security reasonsm usernames, ipaddresses, filenames. All versions older then version 3.2.4 seem to work fine. Please find below some logs of different Filezilla versions. As well Windows computers (Windows XP SP3 tested) as Linux computers (Ubuntu 8.10 tested) are affected. This issue was seen in 2 corporate networks (both using Blue Coat FTP service).
Not all FTP sites are affected as far as I can see, only sites supporting MLSD are affected. The error that is shown is 'Failed to retrieve directory listing'. I've noticed connection failures in the more recent versions of Filezilla.
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