At that point, the next ESR version of Firefox Mozilla will continue supportingįirefox 52 ESR with security updates until sometime in the second Not the frequent feature updates and changes that the main version ofįirefox 52 ESR was released on Maand includes supportįor non-Flash browser plugins. Have a stable, long-term platform that only receives security updates, This browser is intended for organizations to However, Mozilla offers an “Extended Support Release”, or ESR, branch Mozilla ended support for traditional NPAPI browser plugins, asideįrom Flash, with Firefox 52 on March 7, 2017. There is a special version of Firefox that still supports NPAPI plugins. Here's a list of browsers that still support NPAPI from Wikipedia: IcedTea, then remove them: sudo apt-get remove icedtea-plugin icedtea-8-plugin icedtea-netx icedtea-netx-common

If it doesn't work and the wrong Java plugin appears to be loaded eg. Launch Firefox and verify your Java version here: Verify Java Version Ln -sf $PWD/lib/i386/libnpjp2.so ~/.mozilla/plugins/ Now the Java needs to be linked to Firefox. Then do the following in a shell to extract the JRE (replacing with 64 bit versions if needed): sudo mkdir -p -v /opt/java/32 Choose the 32 bit or 64 bit version according to the version of Firefox ESR you downloaded. It will be of the form: for the 32 bit version. Download the tar.gz JRE package for Linux from and store the file in the Downloads folder in your home folder (i.e.Set the user agent to an earlier version of Firefox on Linux eg.

Add a Firefox extension for switching the user agent eg.

Call the key plugin.load_flash_only and set it to false.

Accept the risks and then add a key (right click mouse -> New -> Boolean).

Launch Firefox and type about:config in the location bar.

Make sure it doesn't auto update by changing the update settings in preferences.

Download and extract the Firefox ESR install from here: Download Firefox Extended Support Release.

The following steps should work (tested on Mint 18 based on Ubuntu 16.04 and Mint 19 based on Ubuntu 18.04):

You can use the Extended Support Release of Firefox 52 as follows:

Firefox flash plugin vlc plugin