Disable Update Available popup in Firefox

March 26, 2026

Firefox shows an annoying popup prompting you to download updates and unchecking “Automatically install updates (recommended)” doesn’t help since it only prevents automatic updates.

Annoying Firefox popup

But you can disable it via Policies. On macOS do:

  1. Enable Enterprise Policies

    defaults write org.mozilla.firefox EnterprisePoliciesEnabled -bool TRUE

  2. Disable the popup

    defaults write org.mozilla.firefox ManualAppUpdateOnly -bool TRUE

For Firefox Developer Edition, use org.mozilla.firefoxdeveloperedition instead. Now restart the browser. The popup shouldn’t appear anymore. You can also check the current status of active policies in about:policies.