This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

ఇంకా తెలుసుకోండి

DNS over https stops working

  • 4 ప్రత్యుత్తరాలు
  • 1 ఈ సమస్య కలిగినది
  • 7 వీక్షణలు
  • చివరి సమాధానమిచ్చినది user226514887665625432230708206477982186438

more options

While using DNS over HTTPS it stopped resolving. I have about:config set to network.trr.mode to 3 which relies only on the value in firefox "https://mozilla.cloudflare-dns.com/dns-query". Strangely it never recovers until I disable DNS over https. When I enable network.trr.mode changes to 2 which I change back to 3 and it starts working.

When I close Firefox 63.03 it and reopen it DNS over Https stops working until I perfrom the step above. The startup destination is 49176 to an address in luxumburg. see enclosed

Is this a known issue?

While using DNS over HTTPS it stopped resolving. I have about:config set to network.trr.mode to 3 which relies only on the value in firefox "https://mozilla.cloudflare-dns.com/dns-query". Strangely it never recovers until I disable DNS over https. When I enable network.trr.mode changes to 2 which I change back to 3 and it starts working. When I close Firefox 63.03 it and reopen it DNS over Https stops working until I perfrom the step above. The startup destination is 49176 to an address in luxumburg. see enclosed Is this a known issue?
జోడించిన స్క్రీన్షాట్లు

ప్రత్యుత్తరాలన్నీ (4)

more options

I don't know whether DoH (TRR) is ready for use in current Firefox releases (it is under development), so it may not always work correctly. In case of issues you will have to disable this new feature.

more options

See also the questions you posted here :

/questions/1241830   and   /questions/1241882

(no replies)

more options

OK. Becuase this issue occurs on a Linux workstation as well.

Is there a place I can report this issue?

more options

update:

I am using DNS over https and have firefox 63 setup as follows -no proxy -Operating DNS system set up with a fake non responsive DNS value -The URL for DOH- https://mozilla.cloudflare-dns.com/dns-query

When I set Firefox to use network.trr.mode to a value of 3 which I understand to mean use only the DOH DNS values and do not fall back to any other, firefox fails to to resolve any sites. This worked prior to Dec-7-2018 but not anymore. Can you offer an explanation?