Upgrade to 3.0.2

After installing the new 3.0.2 version, I cannot get logged into Spark due to the following error:
javax.net.ssl SSLHandshakeException: The server selected protocol version TLS11 is not accepted by client preferences [TLS13, TLS12]

Can you guide me in the right direction?

Are you operating the XMPP server as well? If so and is Openfire, perhaps you need to ensure it is running the latest release as well.

Spark and the computer that it’s running on is supporting TLS 1.2 and TLS 1.3.

The server that you’re connecting to (Openfire?) is supporting TLS 1.1 (TLS 1.1 is considered old)

This could be caused by a number of things. Common causes include:

  • Configuration policy: the server might be explicitly configured to support only TLS 1.1.
  • Outdated server software (older versions of XMPP servers might only support TLS up to version 1.1).
  • Outdated versions of Java (Openfire runs on Java, which provides the TLS support).