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Firefox administrator reference

Firefox 160 release notes for enterprise admins

All versions

Firefox 160 Latest

Upcoming, not yet released.

These changes apply to Firefox 160 and Firefox Enterprise 160 unless explicitly stated. Firefox ESR 153.7.0 ships the same day with no policy changes. Firefox ESR 153 is the current ESR.

New in Firefox 160

  • DisableMacOSUserPolicies: Ignore policies from the user's preferences and from user-scope configuration profiles on macOS.

Changes

  • Cookies: Cookies for hosts listed in Block are now cleared every time the policy is applied, not only when the list changes. Firefox Enterprise has this behavior since 159.
  • In Firefox Enterprise, Firefox studies, Nimbus rollouts, Normandy and Firefox Labs are now turned off and locked, as are extension and feature recommendations, More from Mozilla, onboarding and address bar interventions. DisableFirefoxStudies and the FirefoxLabs, ExtensionRecommendations, FeatureRecommendations, MoreFromMozilla, SkipOnboarding and UrlbarInterventions options of UserMessaging are no longer needed. Firefox Enterprise only. (bug 2073149, bug 2082020)
  • Telemetry upload (datareporting.healthreport.uploadEnabled) is now locked on, because Firefox Enterprise security events are sent through it, so users can no longer turn it off in about:config or user.js. DisableTelemetry remains unsupported in Firefox Enterprise. Firefox Enterprise only. (bug 2046816)

Fixes

  • SitePolicies: Match and Exceptions did not apply to sites visited with a trailing dot in the hostname, such as example.com..