This feature sets the minimum protocol version that may be used when negotiating TLS/SSL sessions. Setting TLS 1.0 as the minimum protocol version mitigates the risk of negotiating an insecure protocol, such as SSL 2.0.
Solution
Perform the following procedure: * Open the mozilla.cfg file in the installation directory with a text editor * Add the following lines to mozilla.cfg: lockPref("security.tls.version.min", 1)