This article only applies to Firefox on Windows.
Opt-in prompt
If you have previously chosen Firefox as your default browser, an opt-in message will appear. Simply click 
to enable it.
Manual configuration
Didn’t receive the prompt? Follow these steps to manually set up auto-launch:
- In the Menu bar at the top of the screen, click and then select or , depending on your macOS version.Click the menu button and select .
- In the panel, locate and select the Open Firefox automatically when your computer starts up option.
-
- Note: This option may not be available if you opted out of Studies in Firefox Settings.
- If prompted with This preference has been disabled in Windows, click the Startup Apps link. This will guide you to the appropriate section in Windows' system settings.
- Once done, exit the Settings page. Your adjustments are saved automatically.
