1962220 - Avoid showing the "set Firefox to default?" alert in additional profiles

Status: VERIFIED FIXED

(Toolkit :: Startup and Profile System, enhancement, P1)

Description

[Jared Hirsch [:jhirsch] (he/him) (Needinfo please)]

It should be possible to copy around the pref that governs this default prompt along with other prefs.

Comment 1

[Jared Hirsch [:jhirsch] (he/him) (Needinfo please)]

Based on looking inside ShellService.sys.mjs, the relevant pref appears to be browser.shell.checkDefaultBrowser.

Comment 2

[Jared Hirsch [:jhirsch] (he/him) (Needinfo please)]

Attachment: Bug 1962220 - Only ask a user to set to default once per profile group. r?#profiles-reviewers

Filed followup bug 1985130 to test the pref copying using marionette
once bug 1960964 lands.

Comment 3

[Pulsebot]

Pushed by [e-mail]:
https://github.com/mozilla-firefox/firefox/commit/897d213ecea8
https://hg.mozilla.org/integration/autoland/rev/9b3fff28bd53
Only ask a user to set to default once per profile group. r=profiles-reviewers,mossop

Comment 4

[Cristina Horotan [:chorotan]]

https://hg.mozilla.org/mozilla-central/rev/9b3fff28bd53

Comment 5

[Simona Badau, Desktop QA]

Verified as fixed with Firefox 144.0b2 and the latest Nightly 145.0a1 on Windows 11, Ubuntu 25.04, and macOS 15 — the preference controlling the default dialog appearance is now automatically updated across all profiles when the checkbox is disabled, preventing the dialog from reappearing if the user chose not to see it again.