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Firefox 60 and Firefox 60 ESR Differences


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Firefox 60 and Firefox 60 ESR Differences


 by Martin Brinkmann on May 08, 2018 in Firefox - 8 comments

Mozilla plans to release Firefox 60 and Firefox 60 ESR on Wednesday. While Firefox 60 is just another update for users of the stable channel, the same cannot be said for ESR (Extended Support Release) installations.

Firefox 60 ESR is a major upgrade that is available as an upgrade from Firefox 52 ESR. If you follow Firefox development, you know that major changes happened in the past couple releases and especially with the release of Firefox 57.

Firefox features a new design, performance improvements, and dropped support for legacy add-ons to name just a few of the changes.
Firefox 60 ESR Timeline

Mozilla plans to release Firefox 60 ESR on May 9, 2018. Existing Firefox ESR installations don't need to be updated to the new major version directly as Firefox 52.8 and Firefox 52.9 will be released alongside Firefox 60 ESR and Firefox 60.1 ESR.

The release of Firefox 62 and Firefox 60.2 on September 5, 2018 marks the end of the 52.x version of Firefox ESR.
Differences between Firefox 60 and Firefox 60 ESR


Firefox 60 and Firefox 60 ESR offer identical functionality for the most part. Firefox 60 ESR supports only WebExtensions, and it supports most features that are supported by Firefox 60.

There are notable differences, however.

  • Service Workers are not supported by default. The main reason is that work continues on the implementation of Service Workers in Firefox. You can enable Service Workers in Firefox 60 ESR by loading about:config?filter=dom.serviceWorkers.enabled and setting the preference to true on the page that opens.
  • Push Notifications disabled. Push Notifications require Service Workers and since Service Workers is not enabled by default, Push Notifications is neither. To enable Push Notifications in Firefox 60 ESR: load about:config?filter=dom.push.enabled and set the value of the preference to true.
  • Enterprise Policies for Firefox 60 ESR. Enterprise admins used CCK2 Wizard in previous versions of Firefox to configure Firefox installations in networks. CCK2 Wizard is not compatible with Firefox 57 and policies replaced it. While many policies work in all versions of Firefox, some policies are limited to Firefox ESR.
  • Option to disable add-on signature enforcement. Mozilla made add-on signatures mandatory with the release of Firefox 43. While you can't disable signature requirements in Firefox Stable or Beta, it is possible to disable the feature in Firefox Dev, Nightly and also in Firefox 60 ESR.To do so, load about:config?filter=xpinstall.signatures.required and set the preference to false.

Firefox 52 ESR and Firefox 60 ESR differences

Firefox 60 ESR differs from Firefox 52 ESR in significant ways as well.

  • Windows XP and Windows Vista are not supported. Microsoft dropped support for the two operating systems years ago, and so have companies such as Google already. Firefox ESR 52 is the last official Firefox version that supports the two operating systems. Firefox 60 ESR won't support XP or Vista.
  • Support only for the Adobe Flash NPAPI plugin and not for Microsoft Silverlight or Java. This ends options to play Java or Silverlight content in Firefox.
  • WebAssembly is enabled by default. It was disabled in Firefox 52 ESR.
  • Multi-process handling the same as in Firefox 60 Stable.

Closing Words

Administrators and users have until September before the switch from Firefox 52.x ESR to Firefox 60.x ESR needs to be made. This is true for all systems expect for devices running Windows XP or Vista as those are not supported anymore by Firefox. (via Sören)


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    The links to download Firefox 60, Quantum and ESR are not available at the end of the topic, if you can please add them.


    BTW I think Firefox is doing well, mainly with Quantum version.


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    It most likely  will be 60.0esr-candidates build6 because they not updated the RC since 03-May  and it's May 8th



    I will just stay with the normal release of Firefox as they will kill off legacy addons  in 60.0 esr  and  Firefox needs all the updates it can get to mature into a good browser again now they changed everything in v57 + . If i was going to use ESR i would just use warterfox witch still supports legacy addons.  I've about got use to the new Firefox by now just  i hate there is no classic search bar but other that that it's ok.

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    you can still use up to  Firefox 52.9 if you want to use legacy addons

    if not use 60.0 esr to use webextensions and new plugins on AMO

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    26 minutes ago, teodz1984 said:

    you can still use Firefox 52.9 if you want to use legacy addons

    Yes  it will get you by tell fall .  2018-09-05.


    The reason  they are keeping old ESR around so long has nothing to do with  legacy addons,  it has to do with the new code base is not mature enough yet . Waterfox already has the ability to use some Web addons that v52 don't have and they are going to  port v57+ compatibility for web addons. and will  be able to use legacy addon in to Waterfox 56 ESR . Witch i use on Linux  but on Windows I'm just using the general Firefox  release .:tooth:

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    https://download-installer.cdn.mozilla.net/pub/firefox/releases/60.0/win32/en-US/Firefox Setup 60.0.exe


    https://download-installer.cdn.mozilla.net/pub/firefox/releases/60.0/win64/en-US/Firefox Setup 60.0.exe


    ESR 32 bit


    https://download-installer.cdn.mozilla.net/pub/firefox/releases/52.8.0esr/win64/en-US/Firefox Setup 52.8.0esr.exe


    ESR 64bit


    https://download-installer.cdn.mozilla.net/pub/firefox/releases/52.8.0esr/win64/en-US/Firefox Setup 52.8.0esr.exe





    Portable Firefox MultiVersion 32-64 bit Multilingual Online (0.5 MB) 



    or get from https://portableappz.blogspot.com/search?q=firefox
    Select language and enter Version Number: 60 or 52.8.0esr or 52.8.0esr

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    Topic moved to Software News - Software Chat would have been fine too, but this was posted in Software Updates by mistake I think.

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