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DoH Windows 11

j.a.mcguire
j.a.mcguire
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If I configure DoH in Windows 11, Firefox is unable to make any name lookups.

Originally I had DoH configured in Firefox, I wanted to use a Custom provider so I entered the details, and this worked initially.

I then configured the Windows 11 OS itself with the DoH custom provider, and this also worked in other apps, I could also use nslookup to successfully perform name lookups.

However, after configuring DoH in the OS, when I returned to Firefox, I could no longer access any websites. If I reconfigured Firefox to use CloudFlare or NextDNS with DoH, they also would not work. If I disabled DoH in Firefox and used regular DNS, Firefox was still incapable of performing any name lookups and accessing any websites. Only when disabling DoH in the OS did Firefox begin working normally again. I re-enabled my custom DoH in Firefox and it works as long as I do not enable DoH at the OS level.

Is this a bug?

Firefox 129.0.1 (64-bit)

If I configure DoH in Windows 11, Firefox is unable to make any name lookups. Originally I had DoH configured in Firefox, I wanted to use a Custom provider so I entered the details, and this worked initially. I then configured the Windows 11 OS itself with the DoH custom provider, and this also worked in other apps, I could also use nslookup to successfully perform name lookups. However, after configuring DoH in the OS, when I returned to Firefox, I could no longer access any websites. If I reconfigured Firefox to use CloudFlare or NextDNS with DoH, they also would not work. If I disabled DoH in Firefox and used regular DNS, Firefox was still incapable of performing any name lookups and accessing any websites. Only when disabling DoH in the OS did Firefox begin working normally again. I re-enabled my custom DoH in Firefox and it works as long as I do not enable DoH at the OS level. Is this a bug? Firefox 129.0.1 (64-bit)

All Replies (2)

cor-el
cor-el
  • Moderator
  • Top 10 Contributor
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See also:

Helpful?

j.a.mcguire
j.a.mcguire Question owner
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Is that supposed to be helpful? Here's an article describing the full DoH framework with no specificity? Wow, thanks.

See also: <article on nuclear physics somehow vaguely related>

Modified by j.a.mcguire

Helpful?

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