I am not able to load any websites with Firefox on my PC despite having an internet connection. I went on Reddit and found other people complaining of the exact same issue, so it appears to be a problem with firefox: https://www.reddit.com/r/firefox/comments/s2u7eg/is_firefox_down/

My phone’s firefox browser works fine.

What can cause a browser to fail this way?

  • @[email protected]
    6•2 years ago

    Just saw a toot about it: https://social.tcit.fr/@tcit/107614258789600399

    How to fix Firefox if you’re having trouble today :
    Kill the running Firefox process (through your favourite task manager, htop, whatever)
    Access about:config
    Search for network.http.http3.enabled and set it to false
    Close Firefox and kill it again
    Launch Firefox
    Enjoy

  • m-p{3}
    5•2 years ago

    https://www.reddit.com/r/firefox/comments/s2utvv/comment/hsgrt6v/?utm_source=share&utm_medium=web2x&context=3

    Stickied your post for visibility.
    Edit: It’s been fixed already.

    Firefox has witnessed outages and we are sorry for that. We believe it’s fixed and a restart of Firefox should restore normal behaviour. We will provide more information shortly.

    Also, disabling telemetry doesn’t fix this issue anymore, the telemetry servers weren’t the root cause and have been adjusted already.

    Our current suspicion is that Google Cloud Load Balancer (or a similar CloudFlare service) that fronts one of our own servers got an update that triggers an existing HTTP3 bug. Telemetry was first implicated because it’s one of the first services a normal Firefox configuration will connect first, but presumably the bug will trigger with any other connection to such a server. Our current plan is to disable HTTP3 to mitigate until we can locate the exact bug in the networking stack.

  • @[email protected]
    4•2 years ago

    Same here as of about half an hour ago. I’m on Ubuntu 20.04 using the snap. Closing Firefox and trying to reopen it says that an instance is already open and won’t let me open it again for a few seconds.

    It let me file a bug report from there so I filled it out and added details

    • SalamanderOP
      3•2 years ago

      The URL is missing a few numbers: https://twitter.com/firefox/status/1481657624651313155

      The tweet says:

      “Earlier today, Firefox became unresponsive due to a change in defaults by a cloud provider which triggered a Firefox HTTP/3 bug. We disabled the configuration change and confirmed this fixed the issue.”

      To be honest, I don’t understand what “a change in defaults by a cloud provider” even means. But it smells fishy indeed.