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stable21 Jul 2026 to 16 Sep 2026

Mozilla Firefox: 8.0 to 8.3

8 new settings, 1 changed since 8.0. 3 retained releases apart.

CSVJSONBrowse its 415 settings Vendor download page

Wording or translations only

65 settings · compared with 8.0
  • browser.taskbar.previews.enable
    Computer and user · Mozilla\Firefox\Preferences (Deprecated)
    • Description … preference is locked to false. For a description of the preference, see: [removed: https://github.com/mozilla/policy-templates/blob/master/README.md#preferences][added: https://firefox-admin-docs.mozilla.org/reference/policies/preferences/]
      Whole description, marked

      If this policy is enabled, the preference is locked to true. If this policy is disabled, the preference is locked to false. For a description of the preference, see: [removed: https://github.com/mozilla/policy-templates/blob/master/README.md#preferences][added: https://firefox-admin-docs.mozilla.org/reference/policies/preferences/]

  • browser.urlbar.suggest.bookmark
    Computer and user · Mozilla\Firefox\Preferences (Deprecated)
    • Description … preference is locked to false. For a description of the preference, see: [removed: https://github.com/mozilla/policy-templates/blob/master/README.md#preferences][added: https://firefox-admin-docs.mozilla.org/reference/policies/preferences/]
      Whole description, marked

      If this policy is enabled, the preference is locked to true. If this policy is disabled, the preference is locked to false. For a description of the preference, see: [removed: https://github.com/mozilla/policy-templates/blob/master/README.md#preferences][added: https://firefox-admin-docs.mozilla.org/reference/policies/preferences/]

  • browser.urlbar.suggest.history
    Computer and user · Mozilla\Firefox\Preferences (Deprecated)
    • Description … preference is locked to false. For a description of the preference, see: [removed: https://github.com/mozilla/policy-templates/blob/master/README.md#preferences][added: https://firefox-admin-docs.mozilla.org/reference/policies/preferences/]
      Whole description, marked

      If this policy is enabled, the preference is locked to true. If this policy is disabled, the preference is locked to false. For a description of the preference, see: [removed: https://github.com/mozilla/policy-templates/blob/master/README.md#preferences][added: https://firefox-admin-docs.mozilla.org/reference/policies/preferences/]

  • browser.urlbar.suggest.openpage
    Computer and user · Mozilla\Firefox\Preferences (Deprecated)
    • Description … preference is locked to false. For a description of the preference, see: [removed: https://github.com/mozilla/policy-templates/blob/master/README.md#preferences][added: https://firefox-admin-docs.mozilla.org/reference/policies/preferences/]
      Whole description, marked

      If this policy is enabled, the preference is locked to true. If this policy is disabled, the preference is locked to false. For a description of the preference, see: [removed: https://github.com/mozilla/policy-templates/blob/master/README.md#preferences][added: https://firefox-admin-docs.mozilla.org/reference/policies/preferences/]

  • datareporting.policy.dataSubmissionPolicyBypassNotification
    Computer and user · Mozilla\Firefox\Preferences (Deprecated)
    • Description … preference is locked to false. For a description of the preference, see: [removed: https://github.com/mozilla/policy-templates/blob/master/README.md#preferences][added: https://firefox-admin-docs.mozilla.org/reference/policies/preferences/]
      Whole description, marked

      If this policy is enabled, the preference is locked to true. If this policy is disabled, the preference is locked to false. For a description of the preference, see: [removed: https://github.com/mozilla/policy-templates/blob/master/README.md#preferences][added: https://firefox-admin-docs.mozilla.org/reference/policies/preferences/]

  • dom.allow_scripts_to_close_windows
    Computer and user · Mozilla\Firefox\Preferences (Deprecated)
    • Description … preference is locked to false. For a description of the preference, see: [removed: https://github.com/mozilla/policy-templates/blob/master/README.md#preferences][added: https://firefox-admin-docs.mozilla.org/reference/policies/preferences/]
      Whole description, marked

      If this policy is enabled, the preference is locked to true. If this policy is disabled, the preference is locked to false. For a description of the preference, see: [removed: https://github.com/mozilla/policy-templates/blob/master/README.md#preferences][added: https://firefox-admin-docs.mozilla.org/reference/policies/preferences/]

  • dom.disable_window_flip
    Computer and user · Mozilla\Firefox\Preferences (Deprecated)
    • Description … preference is locked to false. For a description of the preference, see: [removed: https://github.com/mozilla/policy-templates/blob/master/README.md#preferences][added: https://firefox-admin-docs.mozilla.org/reference/policies/preferences/]
      Whole description, marked

      If this policy is enabled, the preference is locked to true. If this policy is disabled, the preference is locked to false. For a description of the preference, see: [removed: https://github.com/mozilla/policy-templates/blob/master/README.md#preferences][added: https://firefox-admin-docs.mozilla.org/reference/policies/preferences/]

  • dom.disable_window_move_resize
    Computer and user · Mozilla\Firefox\Preferences (Deprecated)
    • Description … preference is locked to false. For a description of the preference, see: [removed: https://github.com/mozilla/policy-templates/blob/master/README.md#preferences][added: https://firefox-admin-docs.mozilla.org/reference/policies/preferences/]
      Whole description, marked

      If this policy is enabled, the preference is locked to true. If this policy is disabled, the preference is locked to false. For a description of the preference, see: [removed: https://github.com/mozilla/policy-templates/blob/master/README.md#preferences][added: https://firefox-admin-docs.mozilla.org/reference/policies/preferences/]

  • dom.event.contextmenu.enabled
    Computer and user · Mozilla\Firefox\Preferences (Deprecated)
    • Description … preference is locked to false. For a description of the preference, see: [removed: https://github.com/mozilla/policy-templates/blob/master/README.md#preferences][added: https://firefox-admin-docs.mozilla.org/reference/policies/preferences/]
      Whole description, marked

      If this policy is enabled, the preference is locked to true. If this policy is disabled, the preference is locked to false. For a description of the preference, see: [removed: https://github.com/mozilla/policy-templates/blob/master/README.md#preferences][added: https://firefox-admin-docs.mozilla.org/reference/policies/preferences/]

  • dom.keyboardevent.keypress.hack.dispatch_non_printable_keys.addl
    Computer and user · Mozilla\Firefox\Preferences (Deprecated)
    • Description … disabled, it has no effect. For a description of the preference, see: [removed: https://github.com/mozilla/policy-templates/blob/master/README.md#preferences][added: https://firefox-admin-docs.mozilla.org/reference/policies/preferences/]
      Whole description, marked

      If this policy is enabled, the preference is locked to the string entered. If this policy is disabled, it has no effect. For a description of the preference, see: [removed: https://github.com/mozilla/policy-templates/blob/master/README.md#preferences][added: https://firefox-admin-docs.mozilla.org/reference/policies/preferences/]

  • dom.keyboardevent.keypress.hack.use_legacy_keycode_and_charcode.addl
    Computer and user · Mozilla\Firefox\Preferences (Deprecated)
    • Description … disabled, it has no effect. For a description of the preference, see: [removed: https://github.com/mozilla/policy-templates/blob/master/README.md#preferences][added: https://firefox-admin-docs.mozilla.org/reference/policies/preferences/]
      Whole description, marked

      If this policy is enabled, the preference is locked to the string entered. If this policy is disabled, it has no effect. For a description of the preference, see: [removed: https://github.com/mozilla/policy-templates/blob/master/README.md#preferences][added: https://firefox-admin-docs.mozilla.org/reference/policies/preferences/]

  • dom.xmldocument.async.enabled
    Computer and user · Mozilla\Firefox\Preferences (Deprecated)
    • Description … preference is locked to false. For a description of the preference, see: [removed: https://github.com/mozilla/policy-templates/blob/master/README.md#preferences][added: https://firefox-admin-docs.mozilla.org/reference/policies/preferences/]
      Whole description, marked

      If this policy is enabled, the preference is locked to true. If this policy is disabled, the preference is locked to false. For a description of the preference, see: [removed: https://github.com/mozilla/policy-templates/blob/master/README.md#preferences][added: https://firefox-admin-docs.mozilla.org/reference/policies/preferences/]

  • dom.xmldocument.load.enabled
    Computer and user · Mozilla\Firefox\Preferences (Deprecated)
    • Description … preference is locked to false. For a description of the preference, see: [removed: https://github.com/mozilla/policy-templates/blob/master/README.md#preferences][added: https://firefox-admin-docs.mozilla.org/reference/policies/preferences/]
      Whole description, marked

      If this policy is enabled, the preference is locked to true. If this policy is disabled, the preference is locked to false. For a description of the preference, see: [removed: https://github.com/mozilla/policy-templates/blob/master/README.md#preferences][added: https://firefox-admin-docs.mozilla.org/reference/policies/preferences/]

  • extensions.blocklist.enabled
    Computer and user · Mozilla\Firefox\Preferences (Deprecated)
    • Description … preference is locked to false. For a description of the preference, see: [removed: https://github.com/mozilla/policy-templates/blob/master/README.md#preferences][added: https://firefox-admin-docs.mozilla.org/reference/policies/preferences/]
      Whole description, marked

      If this policy is enabled, the preference is locked to true. If this policy is disabled, the preference is locked to false. For a description of the preference, see: [removed: https://github.com/mozilla/policy-templates/blob/master/README.md#preferences][added: https://firefox-admin-docs.mozilla.org/reference/policies/preferences/]

  • extensions.getAddons.showPane
    Computer and user · Mozilla\Firefox\Preferences (Deprecated)
    • Description … preference is locked to false. For a description of the preference, see: [removed: https://github.com/mozilla/policy-templates/blob/master/README.md#preferences][added: https://firefox-admin-docs.mozilla.org/reference/policies/preferences/]
      Whole description, marked

      If this policy is enabled, the preference is locked to true. If this policy is disabled, the preference is locked to false. For a description of the preference, see: [removed: https://github.com/mozilla/policy-templates/blob/master/README.md#preferences][added: https://firefox-admin-docs.mozilla.org/reference/policies/preferences/]

  • extensions.htmlaboutaddons.recommendations.enabled
    Computer and user · Mozilla\Firefox\Preferences (Deprecated)
    • Description … preference is locked to false. For a description of the preference, see: [removed: https://github.com/mozilla/policy-templates/blob/master/README.md#preferences][added: https://firefox-admin-docs.mozilla.org/reference/policies/preferences/]
      Whole description, marked

      If this policy is enabled, the preference is locked to true. If this policy is disabled, the preference is locked to false. For a description of the preference, see: [removed: https://github.com/mozilla/policy-templates/blob/master/README.md#preferences][added: https://firefox-admin-docs.mozilla.org/reference/policies/preferences/]

  • geo.enabled
    Computer and user · Mozilla\Firefox\Preferences (Deprecated)
    • Description … preference is locked to false. For a description of the preference, see: [removed: https://github.com/mozilla/policy-templates/blob/master/README.md#preferences][added: https://firefox-admin-docs.mozilla.org/reference/policies/preferences/]
      Whole description, marked

      If this policy is enabled, the preference is locked to true. If this policy is disabled, the preference is locked to false. For a description of the preference, see: [removed: https://github.com/mozilla/policy-templates/blob/master/README.md#preferences][added: https://firefox-admin-docs.mozilla.org/reference/policies/preferences/]

  • intl.accept_languages
    Computer and user · Mozilla\Firefox\Preferences (Deprecated)
    • Description … disabled, it has no effect. For a description of the preference, see: [removed: https://github.com/mozilla/policy-templates/blob/master/README.md#preferences][added: https://firefox-admin-docs.mozilla.org/reference/policies/preferences/]
      Whole description, marked

      If this policy is enabled, the preference is locked to the string entered. If this policy is disabled, it has no effect. For a description of the preference, see: [removed: https://github.com/mozilla/policy-templates/blob/master/README.md#preferences][added: https://firefox-admin-docs.mozilla.org/reference/policies/preferences/]

  • media.eme.enabled (Deprecated)Deprecated
    Computer and user · Mozilla\Firefox\Preferences (Deprecated)
    • Description … preference is locked to false. For a description of the preference, see: [removed: https://github.com/mozilla/policy-templates/blob/master/README.md#preferences][added: https://firefox-admin-docs.mozilla.org/reference/policies/preferences/]
      Whole description, marked

      If this policy is enabled, the preference is locked to true. If this policy is disabled, the preference is locked to false. For a description of the preference, see: [removed: https://github.com/mozilla/policy-templates/blob/master/README.md#preferences][added: https://firefox-admin-docs.mozilla.org/reference/policies/preferences/]

  • media.gmp-gmpopenh264.enabled
    Computer and user · Mozilla\Firefox\Preferences (Deprecated)
    • Description … preference is locked to false. For a description of the preference, see: [removed: https://github.com/mozilla/policy-templates/blob/master/README.md#preferences][added: https://firefox-admin-docs.mozilla.org/reference/policies/preferences/]
      Whole description, marked

      If this policy is enabled, the preference is locked to true. If this policy is disabled, the preference is locked to false. For a description of the preference, see: [removed: https://github.com/mozilla/policy-templates/blob/master/README.md#preferences][added: https://firefox-admin-docs.mozilla.org/reference/policies/preferences/]

  • media.gmp-widevinecdm.enabled
    Computer and user · Mozilla\Firefox\Preferences (Deprecated)
    • Description … preference is locked to false. For a description of the preference, see: [removed: https://github.com/mozilla/policy-templates/blob/master/README.md#preferences][added: https://firefox-admin-docs.mozilla.org/reference/policies/preferences/]
      Whole description, marked

      If this policy is enabled, the preference is locked to true. If this policy is disabled, the preference is locked to false. For a description of the preference, see: [removed: https://github.com/mozilla/policy-templates/blob/master/README.md#preferences][added: https://firefox-admin-docs.mozilla.org/reference/policies/preferences/]

  • media.peerconnection.enabled
    Computer and user · Mozilla\Firefox\Preferences (Deprecated)
    • Description … preference is locked to false. For a description of the preference, see: [removed: https://github.com/mozilla/policy-templates/blob/master/README.md#preferences][added: https://firefox-admin-docs.mozilla.org/reference/policies/preferences/]
      Whole description, marked

      If this policy is enabled, the preference is locked to true. If this policy is disabled, the preference is locked to false. For a description of the preference, see: [removed: https://github.com/mozilla/policy-templates/blob/master/README.md#preferences][added: https://firefox-admin-docs.mozilla.org/reference/policies/preferences/]

  • media.peerconnection.ice.obfuscate_host_addresses.blocklist
    Computer and user · Mozilla\Firefox\Preferences (Deprecated)
    • Description … disabled, it has no effect. For a description of the preference, see: [removed: https://github.com/mozilla/policy-templates/blob/master/README.md#preferences][added: https://firefox-admin-docs.mozilla.org/reference/policies/preferences/]
      Whole description, marked

      If this policy is enabled, the preference is locked to the string entered. If this policy is disabled, it has no effect. For a description of the preference, see: [removed: https://github.com/mozilla/policy-templates/blob/master/README.md#preferences][added: https://firefox-admin-docs.mozilla.org/reference/policies/preferences/]

  • media.peerconnection.ice.obfuscate_host_addresses.whitelist (Deprecated)Deprecated
    Computer and user · Mozilla\Firefox\Preferences (Deprecated)
    • Description … disabled, it has no effect. For a description of the preference, see: [removed: https://github.com/mozilla/policy-templates/blob/master/README.md#preferences][added: https://firefox-admin-docs.mozilla.org/reference/policies/preferences/]
      Whole description, marked

      If this policy is enabled, the preference is locked to the string entered. If this policy is disabled, it has no effect. For a description of the preference, see: [removed: https://github.com/mozilla/policy-templates/blob/master/README.md#preferences][added: https://firefox-admin-docs.mozilla.org/reference/policies/preferences/]

  • network.IDN_show_punycode
    Computer and user · Mozilla\Firefox\Preferences (Deprecated)
    • Description … preference is locked to false. For a description of the preference, see: [removed: https://github.com/mozilla/policy-templates/blob/master/README.md#preferences][added: https://firefox-admin-docs.mozilla.org/reference/policies/preferences/]
      Whole description, marked

      If this policy is enabled, the preference is locked to true. If this policy is disabled, the preference is locked to false. For a description of the preference, see: [removed: https://github.com/mozilla/policy-templates/blob/master/README.md#preferences][added: https://firefox-admin-docs.mozilla.org/reference/policies/preferences/]

  • network.dns.disableIPv6
    Computer and user · Mozilla\Firefox\Preferences (Deprecated)
    • Description … preference is locked to false. For a description of the preference, see: [removed: https://github.com/mozilla/policy-templates/blob/master/README.md#preferences][added: https://firefox-admin-docs.mozilla.org/reference/policies/preferences/]
      Whole description, marked

      If this policy is enabled, the preference is locked to true. If this policy is disabled, the preference is locked to false. For a description of the preference, see: [removed: https://github.com/mozilla/policy-templates/blob/master/README.md#preferences][added: https://firefox-admin-docs.mozilla.org/reference/policies/preferences/]

  • places.history.enabled
    Computer and user · Mozilla\Firefox\Preferences (Deprecated)
    • Description … preference is locked to false. For a description of the preference, see: [removed: https://github.com/mozilla/policy-templates/blob/master/README.md#preferences][added: https://firefox-admin-docs.mozilla.org/reference/policies/preferences/]
      Whole description, marked

      If this policy is enabled, the preference is locked to true. If this policy is disabled, the preference is locked to false. For a description of the preference, see: [removed: https://github.com/mozilla/policy-templates/blob/master/README.md#preferences][added: https://firefox-admin-docs.mozilla.org/reference/policies/preferences/]

  • print.save_print_settings
    Computer and user · Mozilla\Firefox\Preferences (Deprecated)
    • Description … preference is locked to false. For a description of the preference, see: [removed: https://github.com/mozilla/policy-templates/blob/master/README.md#preferences][added: https://firefox-admin-docs.mozilla.org/reference/policies/preferences/]
      Whole description, marked

      If this policy is enabled, the preference is locked to true. If this policy is disabled, the preference is locked to false. For a description of the preference, see: [removed: https://github.com/mozilla/policy-templates/blob/master/README.md#preferences][added: https://firefox-admin-docs.mozilla.org/reference/policies/preferences/]

  • security.default_personal_cert
    Computer and user · Mozilla\Firefox\Preferences (Deprecated)
    • Description … disabled, it has no effect. For a description of the preference, see: [removed: https://github.com/mozilla/policy-templates/blob/master/README.md#preferences.][added: https://firefox-admin-docs.mozilla.org/reference/policies/preferences/.]
      Whole description, marked

      If this policy is enabled, the preference is locked to the value selected. If this policy is disabled, it has no effect. For a description of the preference, see: [removed: https://github.com/mozilla/policy-templates/blob/master/README.md#preferences.][added: https://firefox-admin-docs.mozilla.org/reference/policies/preferences/.]

  • security.mixed_content.block_active_content
    Computer and user · Mozilla\Firefox\Preferences (Deprecated)
    • Description … preference is locked to false. For a description of the preference, see: [removed: https://github.com/mozilla/policy-templates/blob/master/README.md#preferences][added: https://firefox-admin-docs.mozilla.org/reference/policies/preferences/]
      Whole description, marked

      If this policy is enabled, the preference is locked to true. If this policy is disabled, the preference is locked to false. For a description of the preference, see: [removed: https://github.com/mozilla/policy-templates/blob/master/README.md#preferences][added: https://firefox-admin-docs.mozilla.org/reference/policies/preferences/]

ChangeIntel

An IT change radar: releases, security, known issues, retirements, documentation changes, and service status from public sources. Every item links to supporting evidence; dates and statuses can change after they are read.

Sources read 21 Oct 01:58 UTC · 258 of 260 readable · 256 fully read · documentation 416/439 current

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