Related:
- Firefox can't connect (IE can)... usual fixes
- Firefox did not connect: potential security issue - Guide
- Firefox network.http.connection-timeout ✓ - Forum - Firefox
- Firefox connection timed out ✓ - Forum - WiFi
- A system seems to be unable to connect to the network. ie shows "page cannot be displayed", however, mozilla firefox is working ✓ - Forum - Internet Explorer/Microsoft Edge
- The connection was interrupted firefox ✓ - Forum - Firefox