Blocked websites

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

Registry

HKLM Software\Policies\Mozilla\WebsiteFilter\Block

HKCU Software\Policies\Mozilla\WebsiteFilter\Block

Options

List (registry values) list - list under Software\Policies\Mozilla\Firefox\WebsiteFilter\Block

Description

If this policy is enabled, you can specify match patterns that indicate sites to be blocked. The match patterns are documented at https://developer.mozilla.org/en-us/Add-ons/WebExtensions/Match_patterns. There is a 1000 entry limit. If this policy is disabled or not configured, no websites are blocked.