1902497 - englishtest.duolingo.com - The Firefox browser is not supported

Status: NEW

(Web Compatibility :: Site Reports, defect, P3)

Description

[Ksenia Berezina [:ksenia]]

Environment:
Operating system: Windows 10
Originally reported Firefox version: Firefox 81.0
Last reproduced with the following UA: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:126.0) Gecko/20100101 Firefox/126.0
Platforms reproduced on: windows

Additional notes:
After logging in with G account

Steps to reproduce:
They require a Chromium browser, Firefox is blocked.

Actual Behavior:
Browser unsupported

Created from https://github.com/webcompat/web-bugs/issues/56109

Comment 1

[Gabe Pérez]

Hi,

Duolingo still does not support Mozilla Firefox, regardless of the version (be it Stable, Developer Edition or Nightly), even though in its error message it suggests installing the most recent version of a list of browsers, ironically including Firefox.

I used the Chrome Mask extension, but it doesn't even want to access Duolingo from Firefox.

Comment 2

[Jeff Muizelaar [:jrmuizel]]

I tried using Chrome Mask and it seemed to work for me. What happened when you tried?

Comment 3

[Gabe Pérez]

(In reply to Jeff Muizelaar [:jrmuizel] from comment #2)

I tried using Chrome Mask and it seemed to work for me. What happened when you tried?

Hi,

When I try to navigate https://www.duolingo.com appears the next message (with ChromeMask on/off):

Browser not supported
Sorry, your browser version is not supported. Please use the latest version of one of the following browsers:
Google Chrome
Apple Safari
Mozilla Firefox
Microsoft Edge

I've disabled the following:

• Firefox' Enhanced Tracking Protection
• DuckDuckGo Privacy Essentials Extension
• uBlock Origin Extension

Actually I'm using Mozilla Firefox 131.0b2 (Developer Edition).

In Mozilla Firefox Nightly for Developers (Android) the website https://www.duolingo.com shows without issues.

Comment 4

[Gabe Pérez]

(Commenting on User Story)

platform:windows,mac,linux
impact:blocked
configuration:general
affects:all
branch:release

1. Platform: Windows (10 Pro, 64-bit)
2. Impact: Website https://www.duolingo.com redirects to https://www.duolingo.com/errors/not-supported.html
3. Configuration: I've tried enabling/disabling Firefox Enhanced Tracking Protection, and the extensions: ChromeMask, DuckDuckGo Privacy Essentials, uBlock Origin
5. Branch: Tested in Firefox 115.15.0esr (64-bit), 131.0b2 (64-bit), 132.0a1 (2024-09-06) (64-bit).