We will also open the file ' update-settings.ini » with notepad and change the part of 'ACCEPTED_MAR_CHANNEL_IDS = firefox-mozilla-release' to 'ACCEPTED_MAR_CHANNEL_IDS = firefox-mozilla-esr'. Once here we will look for the file ' channel-prefs.js ', Open it with notepad and change the part' pref ('', 'release') ' by 'pref (' ',' esr ') '. This is, by default: / Mozilla Firefox / defaults / pref /. To avoid updating and switching to the ESR branch, we must completely close our browser and go to the browser folder where the settings are saved. How to stay on FIrefox 52 with security updatesįortunately, Firefox 52 has an extended ESR support version that will be compatible with these plugins, at least until the next ESR. However, when the next Firefox 53, this trick will stop working and the NPAPI plugins will no longer be compatible with the browser in any way. NPAPI plugins have their days numberedĪs we said, this trick will work in Firefox 52 and allow us to continue using these add-ons during the life cycle of this version. When the browser reloads, we will be able to see how these plugins are active again in the browser (by entering about: addons) and, if we have them correctly installed on our computer, it will allow us to continue loading this content. We double click on it to change its value to 'false' and we restart our browser.

To activate these plugins in this version of the browser, simply open the configuration section » about:config ✺nd search for the entry: How to use Java, Silverlight and other NPAPI plugins in Firefox 52 This new version was also the first to block the use of NPAPI plugins by default, except Flash, causing all web pages that use, for example, Java or Silverlight to stop.įortunately, it is still possible to continue to use, temporarily, this type of content in the browser. Three days ago Mozilla released the new Firefox 52, the new version of the web browser that comes with significant changes and improvements that continue to gradually shape the future of the browser.

Mozilla enable java in firefox