Steps to reproduce:

I upgraded my ESR to latest one and noticed that the any error page now display firefox illustration. We use ESR for work environment and this is SO unprofessional of you.

Could you add an option to force-remove those things like:

{'policy':
'Disable_Mascot': true
}

? There's also multiple mentions on reddit asking for a removal of logo from error page.

Besides, the older ESRs doesn't have this kind of thing at all - I expect browser to show error code, not cartoon.

Actual results:

Above

Expected results:

Above

The Bugbug bot thinks this bug should belong to the 'Firefox::Enterprise Policies' component, and is moving the bug to that component. Please correct in case you think the bot is wrong.

The pref defaults to true. When it is false, net-error-card omits the
illustration container, and the card shrinks to its widest text line,
capped at the width the text column has beside the illustration, so the
text stays visually centered instead of sitting left of center in the
illustration-sized card.

https://hg.mozilla.org/mozilla-central/rev/e53a49b48b00

firefox-esr153 Uplift Approval Request

• User impact if declined/Reason for urgency: Working with a partner to create a build and want to hide the logos on error page.
• Code covered by automated testing?: yes
• Fix verified in Nightly?: yes
• Needs manual QE testing?: no
• Steps to reproduce for manual QE testing:
• Risk associated with taking this patch: low
• Explanation of risk level: well tested, simple pref check.
• String changes made/needed?: None
• Is Android affected?: no

The pref defaults to true. When it is false, net-error-card omits the
illustration container, and the card shrinks to its widest text line,
so the text stays visually centered instead of sitting left of center.

Original Revision: https://phabricator.services.mozilla.com/D324950