Join the Mozilla’s Test Days event from 9–15 Jan to test the new Firefox address bar on Firefox Beta 135 and get a chance to win Mozilla swag vouchers! 🎁

Avatar for Username

Sykje yn Support

Mij stipescams. Wy sille jo nea freegje in telefoannûmer te beljen, der in sms nei ta te stjoeren of persoanlike gegevens te dielen. Meld fertochte aktiviteit mei de opsje ‘Misbrûk melde’.

Mear ynfo

Dizze konversaasje is argivearre. Stel in nije fraach as jo help nedich hawwe.

Firefox not using HTTP3 when HTTP3 is enabled on that site.

  • 2 antwurd
  • 2 hawwe dit probleem
  • 4 werjeftes
  • Lêste antwurd fan Alvin

Alvin
Alvin
more options

I visited https://cloudflare-quic.com/ and it said my browser used HTTP/2 when loading that page. Devtools also said is load with HTTP/3 protocol. `network.http.http3.enabled` is true in about:config

I visited https://cloudflare-quic.com/ and it said my browser used HTTP/2 when loading that page. Devtools also said is load with HTTP/3 protocol. `network.http.http3.enabled` is true in about:config

Alle antwurden (2)

Alvin
Alvin Fraacheigener
more options

Turns out is because `network.dns.disablePrefetch` is true, by setting that to false fixed the issue.

Alvin
Alvin Fraacheigener
more options

Alvin said
Turns out is because `network.dns.disablePrefetch` is true, by setting that to false fixed the issue.

That might not be the direct cause of this issue, it works for the first time but after you restart the browser the issue persists.