Don't Check Default Browser

Supported on: Firefox 60 or later, Firefox 60 ESR or later

Registry

HKLM Software\Policies\Mozilla\Firefox

HKCU Software\Policies\Mozilla\Firefox

Value name: DontCheckDefaultBrowser

Enabled: DontCheckDefaultBrowser = 1

Disabled: DontCheckDefaultBrowser = 0

Description

If this policy is enabled, Firefox does not check to see if it is the default browser at startup. If this policy is disabled or not configured, Firefox checks to see if it is the default browser at startup.