Don't enable HTTPS-Only Mode
I have "Don't enable HTTPS-Only Mode" selected and still cannot connect to local sites. Example http://192.168.1.81 is chnaged to https://192.168.1.81 and rrecive cannot connect message.
This problem started after you last week after an update.
Krejt Përgjigjet (1)
Try to enter about:config in the address bar and switch dom.security.https_only_mode.upgrade_local to false.