The latest version of Firefox (96.0 and 95.02) seems to have a problem where as soon as you enable DOH (DNS over HTTPS) the browser is unable to establish any connections. Disabling this feature once enabled doesn't resolve the issue, closing the browser leaves processes hanging in the background consuming resources. Several of my friends have reported (Windows/Linux) seeing the same issue but we haven't been able to find a solution.
Ask HN: Firefox connection problems after enabling DoH?
1–10 of 410 posts
Re: Ask HN: Firefox connection problems after enabling DoH?
#2I'm having the same issue. All tabs froze and the FF energy demand spiked. I upgraded manually from 95.0.2 to 96.0 but the issue persisted.
Twitter[1] is currently lighting up with broken FF reports across the globe.
Some people are reporting that if you hold down Shift while opening it works (though any FF personalisation is wiped). That didn't work for me on Mac.
[1]: https://twitter.com/search?f=live&q=firefox%20until%3A2022-0...
Re: Ask HN: Firefox connection problems after enabling DoH?
#3Reddit Thread with tons of comments already: https://old.reddit.com/r/firefox/comments/s2u7eg/is_firefox_...
I have the same issue, a different profile worked
edit: Twitter feed https://twitter.com/search?q=firefox&src=typed_query&f=live
There better be some hell of a post mortem
edit2: `network.http.http3.enabled` in about:config to false fixed it for me. Source: https://old.reddit.com/r/firefox/comments/s2u7eg/is_firefox_...
Re: Ask HN: Firefox connection problems after enabling DoH?
#4Yes, my Firefox cannot connect, while other browsers can. I don't remember having anything like this before.
Re: Ask HN: Firefox connection problems after enabling DoH?
#5I'm typing this from my rarely-used Chrome install. Firefox just broke for me, and killing all the processes and / or restarting isn't helping.
Edit: I am on Firefox 91.4.1esr, so clearly it isn't just the latest versions that are affected.
Re: Ask HN: Firefox connection problems after enabling DoH?
#6What worked for me was disabling HTTP3 support with the 'network.http.http3.enabled' key in about:config and then restarting Firefox.
Seems like it's stuck in the 'SocketThread', repeatedly doing this:
2022-01-13 08:20:53.075936 UTC - [Parent 4106991: Socket Thread]: V/nsHttp Http3Stream::OnReadSegment count=333 state=4 [this=7f6e295623a0]Re: Ask HN: Firefox connection problems after enabling DoH?
#7Same here, couldn't connect on nightly, had to downgrade to normal one, crash report couldn't be sent as well, likely due to the same problem (weird, I thought it's handled by macOS itself).
Re: Ask HN: Firefox connection problems after enabling DoH?
#8What worked for me was disabling HTTP3 support with the 'network.http.http3.enabled' key in about:config and then restarting Firefox. Seems like it's stuck in the 'SocketThread', repeatedly doing this: 2022-01-13 08:20:53.075936 UTC - [Parent 4106991: Socket Thread]: V/nsHttp Http3Stream::OnReadSegment count=333 state=4 [this=7f6e295623a0]
I can confirm that disabling HTTP3 support helps. Thank you for the workaround.
Re: Ask HN: Firefox connection problems after enabling DoH?
#9Got the exact same issue just now. I managed to solve it by clearing all the cookies and websites data, from the Firefox settings.
Re: Ask HN: Firefox connection problems after enabling DoH?
#10Thought it was my Internet connection as a browser wouldn't just stop working like that. Currently on Edge.