TLS 1.0/1.1 support has been disabled by default (Breaking) | Firefox Site CompatibilityThe support for the Transport Layer Security (TLS) protocol’s version 1.0 and 1.1, deprecated since Firefox 71, has been removed from all the channels as of Firefox 74 78. All major browsers are going to drop the support for the older versions of TLS in early 2020. Make sure to enable TLS 1.2 or 1.3 on your web server, otherwise Firefox will show the Secure Connection Failed error page to prevent
