FileZilla Errors: "The server's certificate is unknown" & ECONNREFUSED
You might receive the following error when trying to connect to your cPanel shared hosting account with FileZilla (image):
The server's certificate is unknown. Please carefully examine the certificate to make sure the server can be trusted.
Proceeding past this error will then generate this error (image):
Error: The data connection could not be established: ECONNREFUSED - Connection refused by server
To resolve this error, you must either connect via sFTP or disable TLS in FileZilla's Site Manager.
Connecting via sFTP
This solution applies only to Linux-based hosting accounts (more info).
This solution only works if you're connecting with the primary FTP user.
Disabling TLS in the Site Manager
This solution works for any FTP user.
- In FileZilla, from the File menu, select Site Manager.
- Click New Site.
- Complete the following fields, and then click Connect:
Field What to do... Host Enter your hosting account's IP address (cPanel). Protocol Select FTP - File Transfer Protocol. Encryption Select Use plain FTP. Logon Type Select Normal. User & Password Enter your hosting account's username and password.