How to Disable plugin-container.exe, Plugin Container for Firefox

With the release of the 3.6.4 version of the Mozilla Firefox browser, a new process has appeared in Task Manager, plugin-container.exe.

Many people have complained about this executable, either because it required Internet access at it was detected as being a suspicious process by the firewall, either for the excessive RAM and CPU usage.

Many times when we visit web sites with flash content ( online games, flash presentations, flash web sites ) web sites with video and audio content, we might not be able to view the content because some specific applications are missing, like Flash, QuickTime or Silverlight. When we end up in these situations, this plugin connects to the Internet and installs, in the background, the plugin we need to access the content.

Normally, this process shouldn’t require many resources, however in most cases it happens to reach amazing “performances” consuming a lot of the RAM and CPU resources, especially during plugin installations.

If you think that this process is not useful to you or if it takes too much of your system’s resources, there are two options. You can uninstall Firefox and Install Opera, or you can disable the plugin-container.exe process.

To disable this process you have to open Mozilla Firefox and in the address bar type: about:config and then click on “I’ll be careful, I promise”.

In the list that will open we look and set “false” for:


Restart Mozilla Firefox. After you restart the browser you will notice that this process, plugin-controller.exe has disappeared.

If you will receive errors when accessing some web sites with flash content, reactivate the lines above.