Do not allow user messaging preferences to be changed

Supported on: Firefox 75 or later, Firefox 68.7 ESR or later

Registry

HKLM Software\Policies\Mozilla\Firefox\UserMessaging

HKCU Software\Policies\Mozilla\Firefox\UserMessaging

Value name: Locked

Enabled: Locked = 1

Disabled: Locked = 0

Description

If this policy is disabled, user messaging preferences can be changed by the user. If this policy is enabled or not configured, user messaging preferences cannot be changed by the user.