title: FTP Task: Unable to send files using "FTP Connection Manager" in Visual Studio 2012
body: <p>I inconsistently get the following error when uploading files to a ftp server:</p>
  
  <blockquote>
    <p>FTP Task: Unable to send files using "FTP Connection Manager"</p>
  </blockquote>
  
  <p>The port is 21 and it is set to passive mode.  The task succeeds 80% of the time it is executed; the occasional failures are random and I'm looking for the best way to troubleshoot the problem.</p>
  
  <p>Is there any way to get more descriptive error information via visual studio?</p>