Causes of the “Response 150” error message

Asked By 10 points N/A Posted on -

I always get the error: Response 150 everytime I try logging into an FTPS server, what is causing this and how can I avoid this?

Answered By 80 points N/A #116082

Causes of the “Response 150” error message


The error code 150 on an FTPS means that the file status is okay and that the server is about to open data connection. It actually uses two ports:

  • 21 for sending commands
  • 20 for sending data

Status code 150 indicates that the server was about to open a new connection on port 20 to send some data but it cannot do so because:

  • Your client may be behind a firewall and is trying to use an Active-mode FTP
  • Your server could be behind a firewall and is trying to use a Passive-mode FTP

To have this resolve:

  • Open the Windows Firewall
  • Click on Allow a program or feature through Windows Firewall
  • Under the Allowed programs and features list check the File Transfer Program
  • Open command prompt and type ftp x.x.x.x
  • Login then ls/dir/get/put

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