Tap here to go to the mobile version of the site.
Your Firefox is out of date and may contain a security risk! Upgrade Firefox

Support Forum

in Firefox 17 for linux the installation folder has changed from mozilla to firefox and the plugins folder is missing from the 64 bit installation under RedHat.


I need to install an older version of Java on my Redhat 5 Enterprise workstation.

Since Firefox 17.0.5 the installation folder changed from /usr/lib64/mozilla to /usr/lib64/firefox. In the 64 bits version, there is no plugins folder, is that normal?

When I create the missing plugin folder and that I install the java plugin in it, it does not appears in the plugins list.

The 32 bits installation is working though ( /usr/lib/firefox/firefox ).

Modified by louismc

Additional System Details

Installed Plug-ins

  • ICA Plugin (Linux) Version 11.0.140395 (/usr/lib/ICAClient/wfica)
  • The Totem 2.16.7 plugin handles video and audio streams.
  • nspluginwrapper is a cross-platform NPAPI plugin viewer, in particular for linux/i386 plugins.This beta software is available under the terms of the GNU General Public License.


  • User Agent: Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/20130216 Firefox/17.0

More Information

Yousef 15 solutions 71 answers

Helpful Reply

If it helps,

/usr/lib64/mozilla/plugins/lib is all I have in that directory.

Question owner

Any idea where your plugins installs into your 64bit installation of Linux 17+ ?

Java installs correctly in the 32 bits version of Firefox 17 (beside the fact that it is auto-disabled because of the blocklist).


Yousef 15 solutions 71 answers

It's definitely /usr/lib64/mozilla/plugins/

Installing IcedTea Java7 gives me /usr/lib64/mozilla/plugins/IcedTeaPlugin.so, and I'm assuming it will be the same for Oracle's Java

Question owner

On which distro? Here, on our Redhat installation it seems like it uses /usr/lib(64)/firefox instead of .../mozilla since the last firefox updates (version 17.0.3).

Yousef 15 solutions 71 answers

Arch Linux. (Quite different to Redhat, but should function the same)

The only thing I have in /usr/lib(64)/firefox/plugins/ is Google Talk Plugins. It's definitely loading from the mozilla folder.

Just a side note, Firefox 20 is the latest version available, so if your distro's repos have it, it would be a good idea to upgrade.

Helpful Reply

Seems like both /usr/lib(64)/mozilla/plugins and /usr/lib(64)/firefox/plugins are working for you...

I have no clue why my java plugin doesn't show up in the plugins list of my 64 bits installation... I have the libnpjp2.so in all possible folders /usr/lib/mozilla/plugins/ /usr/lib64/mozilla/plugins/ /usr/lib/firefox/plugins/ /usr/lib64/firefox/plugins/

The Java version I need to run is 1.6.0_30 and I can't upgrade it as some other apps need this version to work here.

Modified by louismc

mdalvecc 0 solutions 1 answers

I was having the same problem also. Plugins weren't working, not a single one.

Then I realized that placing them inside ~/.mozilla/plugins was the solution. Since I'm the only user of my machine, this fix works for me.

I just made a symbolic link for /usr/lib64/mozilla/plugins pointing to ~/.mozilla/plugins and placed all the plugins in there.

Voilá! Every plugin works now :) !