Firefox/Waterfox was working just fine and then I started getting an error. The error on Firefox’s end was that it couldn’t connect because of HTTPS. I thought it was my Internet connection but Chrome is connecting fine to every website. So I disabled ALL my Shields and Firefox started connecting again.
I disabled my Avast Firewall and it’s working. I got this message from Avast.
"We’ve safely aborted a connection on push.services.mozilla.com because it was infected with URL.Mal
Running Windows 10 X64
Version 1803 build 17728.100
Avast Internet Security latest version.