This server does not support tls session resumption on the data connection

1. What is TLS session resumption on the data connection?
2. How do I disable TLS session resumption in FileZilla?
3. What is the difference between TLS connection and TLS session?

What is TLS session resumption on the data connection?

TLS session resumption on the data connection is an important security feature to protect against data connection stealing attacks. If you continue, transferred files may be intercepted or their contents replaced by an attacker.

How do I disable TLS session resumption in FileZilla?

To resolve the error, you can either deactivate 'Require TLS session resumption on data connection' (from: FileZilla sever options > General Settings > 'FTP over TLS settings' page) or change the FTP engine in the profile to WeOnlyDo (under: Modify profile > FTP page).

What is the difference between TLS connection and TLS session?

What is the difference between a TLS connection and a TLS session? sessions define the parameters of security that can be shared between different connections. and a session is still running then you can resume the closed connection in a different process.