Filezilla ENETUNREACH FTP Error with Kaspersky Anti-Virus

If you’re using the anti-virus application Kaspersky Endpoint Security 10 for Windows and Filezilla for FTP, you might have encountered an ENETUNREACH “Network unreachable” error when trying to upload your files to the server. Or, perhaps you updated Filezilla to version 3.11.0 (or above) and it stopped working, giving you the same ENETUNREACH error.

This is a known issue between Filezilla and Kaspersky. It happens because of the new way Filezilla binds IP addresses to prevent data connection stealing. You can read about the details in this forum post.

You can fix this issue by either reverting back to an earlier version of Filezilla (version 3.10) or by adding an exclusion to the Kaspersky firewall.

Follow these directions to add an exclusion for Filezilla:

1. Open the Kaspersky application window (by clicking the Kaspersky icon in the notification area or through the Start menu)
2. Click on the Settings tab
3. On the left column, click the Anti-Virus protection category to expand it
4. Click the Firewall item
5. Click the Application Network rules… button to open the “Firewall” window
6. Locate the “FILEZILLA PROJECT” folder (it should be under the “Trusted” folder) and click the plus (+) sign next to it to expand the folder
7. Click on filezilla.exe
8. On the lower split window, click the Additional… button to open the “Application control rules” window
9. Click the Exclusions tab
10. Check the box for “Do not inherit restrictions of the parent process (application)”
11. Check the box for “Do not scan network traffic”
12. Click OK on the “Application control rules” window
13. Click OK on the “Firewall” window

You should be able to connect to the server with Filezilla now.

Of course, there are lots of other reasons why you may get an FTP error. If you do, we offer free (and excellent) technical support for our customers. You can always reach our Support team 24/7 at support@winhost.com or through our support portal at support.winhost.com.