I can not connect to the FTP service using the Windows FTP program, which I run from the command prompt.
After entering:  

FTP ftp://www.drivehq.com

I get the response connected, but can not enter the user name and password. After some time, the connection is closed by the host.

This is one of the most frequently asked questions; the asnwer is available in FAQ:

http://www.drivehq.com/ftp/ click on FAQ and Expand All

Please note FTP has 2 modes, Active and Passive. Unfortunately MS command-line FTP client is crippled as it only supports Active, which is almost always blocked by Firewalls. You can use MS command-line FTP client only if you have no firewalls and if your PC has a public Internet IP address.

You can use DriveHQ FileManager 4.0 client, which has a lot of great features and generally much faster than regular FTP client.

You can also use Windows Explorer to access DriveHQ FTP service, just enter the path:

ftp://USERNAME:PASSWORD@ftp.drivehq.com/

DriveHQ has released a command-line FTP client: DriveHQ Command FTP. For more detailed info, please visit:

https://www.drivehq.com/DriveHQ-KB/ftp/Command-line_FTP_Scripting.aspx

DriveHQ Command FTP is designed to replace the default Windows FTP client. It has the following advantages:

• 1. It supports both active and passive mode FTP.
• 2. It supports FTP over SSL (FTPS & FTPES) and SFTP.
• 3. It supports automatic resuming/retrying.
• 4. It supports data compression and encryption.
• 5. It supports downloading/uploading folders.
• 6. It supports mirroring/synchronizing folders.
• 7. It supports event logging for auditing and trouble shooting.
• 8. It can send email reports after an operation.
• 9. It supports more powerful FTP scripts.

If FTP is blocked by your firewall, you can try SFTP.

 prompt CMD command do not work anymore