Topic "FTP download fails when Windows firewall is active"

Author Message


I'm using WinSCP 4.1.15 or 4.1.19 on a Windows Server 2003 R2 for file uploads and downloads to an FTP backup server.

When the integrated Windows Firewall is active, upload works as expected. However downloads of large files (tested with file sizes more than 1 GB) always fail after 99% of transmission. The connection is terminated and the FTP server denies access. After a few seconds and an error message the download process restarts again. This is an endless loop.

Workaround: Deactivate the Windows Firewall while downloading. Maybe this is a server dependend problem using Strato server

[View user's profile]
Site Admin
Joined: 2002-12-10
Posts: 26858
Location: Prague, Czechia
Thanks for your post. This may possibly be related to other reports.
Martin Prikryl


Yes, this is a server dependend problem using Strato server
You right Benny56.

You can post new topics in this forum


What is WinSCP?

It is award-winning SFTP client, SCP client, FTPS client and FTP client integrated into one software program for file transfer to FTP server or secure SFTP server. [More]

And it's free!


About donations

$9   $19   $49   $99

About donations


WinSCP Privacy Policy

WinSCP License