Get 530 Login Incorrect error after period of inactivity

[jasonc]

Recently I have had my FTP connections drop after a period of inactivity (about 10 to 15 minutes or so), and when I try to reconnect I get a 530 login incorrect error.

I have tried disabling the Windows firewall, I've double checked my credentials and am certain there is nothing wrong there. The only way to fix it seems to be restarting my computer (restarting FileZilla isn't enough).

To reiterate, there is nothing wrong with my credentials, and a computer restart fixes the problem, but if the server drops the connection after a period of inactivity it is impossible to restart the connection because of this 530 login incorrect error.

The debug log is shown below:

Trace: CControlSocket::SendNextCommand()
Trace: CFtpLogonOpData::Send() in state 0
Status: Resolving address of *
Status: Connecting to :21...
Status: Connection established, waiting for welcome message...
Trace: CFtpControlSocket::OnReceive()
Response: 220 10.0.0.5 FTP server ready
Trace: CFtpLogonOpData::ParseResponse() in state 1
Trace: CControlSocket::SendNextCommand()
Trace: CFtpLogonOpData::Send() in state 2
Command: AUTH TLS
Trace: CFtpControlSocket::OnReceive()
Response: 500 AUTH not understood
Trace: CFtpLogonOpData::ParseResponse() in state 2
Trace: CControlSocket::SendNextCommand()
Trace: CFtpLogonOpData::Send() in state 3
Command: AUTH SSL
Trace: CFtpControlSocket::OnReceive()
Response: 500 AUTH not understood
Trace: CFtpLogonOpData::ParseResponse() in state 3
Status: Insecure server, it does not support FTP over TLS.
Trace: CControlSocket::SendNextCommand()
Trace: CFtpLogonOpData::Send() in state 5
Trace: CFtpControlSocket::SetAsyncRequestReply
Trace: CControlSocket::SendNextCommand()
Trace: CFtpLogonOpData::Send() in state 6
Command: USER
Trace: CFtpControlSocket::OnReceive()
Response: 331 Password required for *
Trace: CFtpLogonOpData::ParseResponse() in state 6
Trace: CControlSocket::SendNextCommand()
Trace: CFtpLogonOpData::Send() in state 6
Command: PASS
Trace: CFtpControlSocket::OnReceive()
Response: 530 Login incorrect.
Trace: CFtpLogonOpData::ParseResponse() in state 6
Trace: CFtpControlSocket::ResetOperation(1094)
Trace: CControlSocket::ResetOperation(1094)
Trace: CFtpLogonOpData::Reset(1094) in state 6
Error: Critical error: Could not connect to server

[Tim Kosse]

This is a system issue. Please uninstall all third-party networking software that did not come with Windows.

[jasonc]

I don't have any third party networking software. Are you suggesting FileZilla not compatible Windows 10?