Despite what the threads I read say, Discourse does not support UXP browsers and it’s forks like Pale Moon, Basilisk, etc… Any idea why or how this can be fixed? Does not get fixed when spoofing as Firefox in User Agent either. [Screenshot 2026-05-27 at 02.18.35] Pale Moon is not an old browser b…

hi there :wave: welcome :slight_smile: from What is Discourse? | Discourse - Civilized Discussion ) [image] this has also been discussed before here: Discourse is incompatible with Palemoon web browser (and older Firefox)

Is there anything Pale Moon can do to meet these guidelines? I’m happy to oblige to implement any missing JavaScript/CSS.

If it’s your own forum, this plugin might help: [image] Dumbcourse – Old-browser friendly UI at /dumb (D-pad + small screens) Plugin information_source Summary Dumbcourse adds a lightweight, old-browser friendly Discourse UI under /dumb, designed for D-pad…

If you open the browser developer console, you should see a log of the failed JS/CSS feature-detections.

Will take a look at it. Thanks. :+1:

Discourse does not support UXP browsers and it's forks (e.g, Pale Moon)

Product Support

NateDhaliwal (Nate Dhaliwal) May 27, 2026, 4:11am 4

If it’s your own forum, this plugin might help:

Topic		Replies	Views
Discourse is incompatible with Palemoon web browser (and older Firefox) Product Support	2	347	August 31, 2025
Discourse and Pale Moon browser Product Support	8	2106	February 15, 2018
Better copy for browser is "too old to work on this site" UX	11	1540	July 18, 2022
Unfortunately, your browser is unsupported Product Support	8	360	May 31, 2026
Discourse not working on an old phone with an unsupported browser Product Support	14	2424	February 7, 2020

Discourse does not support UXP browsers and it's forks (e.g, Pale Moon)

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