filezilla failed to retrieve directory listing on tls

Trace: CFtpChangeDirOpData::Send() in state 1 Trace: CFtpChangeDirOpData::Send() in state 0 Trace: CFtpListOpData::ListSend() in state 0 Trace: CFtpControlSocket::ResetOperation(0) Trace: CFtpLogonOpData::ParseResponse() in state 5 Response: 331 Password required for printiq Trace: CFtpLogonOpData::Send() in state 5 Status: Insecure server, it does not support FTP over TLS. Trace: CFtpLogonOpData::ParseResponse() in state 3 Trace: CFtpLogonOpData::Send() in state 3 Trace: CFtpLogonOpData::ParseResponse() in state 2 Response: 502 Explicit TLS authentication not allowed Trace: CFtpLogonOpData::Send() in state 2 Trace: CFtpLogonOpData::ParseResponse() in state 1 Status: Connection established, waiting for welcome message. Status: Resolving address of *SERVER DNS* Trace: CFtpLogonOpData::Send() in state 0 Trace: CFileZillaEnginePrivate::ResetOperation(0) Trace: CFileZillaEnginePrivate::ResetOperation(66) Trace: CControlSocket::ResetOperation(66)

Trace: CFtpControlSocket::ResetOperation(66) Successful Status: Disconnected from server Why does the connection succeed on 1 server but fail on another?īoth of our servers connecting to customers FTP are in Azure, both are VM's running the same OS I've set the debug option in FileZilla Client and below are both the successful and failed connections. The connection works from my office, and from all of our Azure servers except one.

Our customer has a FileZilla FTP Server running on a Windows box and I'm using FileZilla Client to test the connection.

Filezilla failed to retrieve directory listing on tls