What is plugin-container.exe?

The .exe extension on a filename indicates an executable file. Executable files may, in some cases, harm your computer. Therefore, please read below to decide for yourself whether the plugin-container.exe on your computer is a Trojan that you should remove, or whether it is a file belonging to the Windows operating system or to a trusted application.

Click to Run a Free Scan for plugin-container.exe related errors

Plugin-container.exe file information

Windows Task Manager with plugin-container
Plugin-container.exe process in Windows Task Manager

The process known as Plugin Container for Firefox or Plugin Container for Palemoon or Plugin Container for Waterfox or Plugin Container for Nightly or Plugin Container for CometBird or Plugin Container for SeaMonkey or Plugin Container for FirefoxDeveloperEdition or Plugin Container for Aurora

belongs to software Mozilla Firefox or Firefox or FoxyTunes for Firefox or Pale Moon (version 12.3r2, 8.0-x64) or Waterfox or Nightly (version 20.0a1, 41.0a1, 27.0a1, 19.0a1, 8.0a1) or CometBird or Firefox Developer Edition (version 37.0a2, 48.0a2)

by Mozilla ( or Moonchild Productions.

Description: Plugin-container.exe is not essential for Windows and will often cause problems. The plugin-container.exe file is located in a subfolder of "C:\Program Files" or sometimes in a subfolder of C:\ or in a subfolder of C:\Windows or in C:\. Known file sizes on Windows 10/8/7/XP are 16,856 bytes (37% of all occurrences), 14,808 bytes and 59 more variants. 
The program has no visible window. The file is not a Windows core file. The file is certified by a trustworthy company. Therefore the technical security rating is 37% dangerous, however you should also read the user reviews.

Uninstalling this variant: If you have any problems with plugin-container.exe, you can also visit the support page [1][2], update [1][2] the program to the latest version or uninstall Mozilla Firefox or FoxyTunes for Firefox from your computer using the Control Panel applet Uninstall a Program.

Recommended: Identify plugin-container.exe related errors

Important: Some malware camouflages itself as plugin-container.exe. Therefore, you should check the plugin-container.exe process on your PC to see if it is a threat. We recommend Security Task Manager for verifying your computer's security. This was one of the Top Download Picks of The Washington Post and PC World.


User Comments

firefox normal
  ana   (further information)
plugins file downloader
plugin container.exe
The crash protection in Firefox is provided by loading some plugins separately in a new process called plugin-container. How Firefox crash protection can help you? With crash protection on, if a plugin crashes or freezes, the main browser process (firefox.exe) will stay running but the portion of the web page controlled by that particular plugin will be disabled. It means, a plugin crash will not affect the rest of Firefox and you will enjoy uninterrupted browsing. Later, you can restart the plugin content simply by refreshing the web page. So, plugin-container.exe is definitely not a malware.
  Dr. Ashley   (further information)
It's a procees used by firefox
  rodolfo perez   (further information)
foxfire plug-in for v 3.6.4
  Skey   (further information)
because this app take more than 90% of cpu when the fire fox is running.
  ali shekari  
Flash player, Java
  Alo   (further information)
Plugin Container for Firefox
Creates an unstable envirement sluggish performance....acts like a trojan! best advise to firefox stop trying to fix something that isnt busted.
I have two of the same files one thats 42MB and the other 18MB. I removed the larger file
Scans show this coming up as a java update. It does not look official and text is in spanish. No additional details given, what does that say. Oracle does not work like this and I have seen reports on exploits for nefarious reasons.
i just want to stop it,
  chris chick  
It acts like a memory leak. Just closing the process down and refreshing the browser page frees up 50% of memory it was hogging.
I too have plugin-container.exe. issues for a few days and thought it harmless until run Malwarebytes and found 49 items that needed removing or quarantine so looking for a way to disable/removal it
  Jayden J  
my cpu usage shows as 100% .99% usage shows in plugincontainer.exe.i stopped its running from task manager .nw my laptop working perfectly
Firefox is almost unusable now, it gets slower and slower until it just stops working. FireFox doesn't crash, but it may as well.
It use a many part of CPU and creates an unstable environement.
  Florina Iacovachi  
Unless you've got an infected version of the file, it's benign. It is a program that Firefox developed to sandbox certain media applications (like Flash) so that if the plugin crashes it doesn't take Firefox with it.
  Anonymous   (further information)
dangerous...using 99 % of my CPU
plugin-container.exe is very useful to debug my plugin on Firefox/waterfox browser. I don't see any CPU or memory issue with it, works normally on my windows 8.1 OS.

Rating chart

Summary: Average user rating of plugin-container.exe: based on 31 votes with 22 user comments. 9 users think plugin-container.exe is essential for Windows or an installed application. 3 users think it's probably harmless. 6 users think it's neither essential nor dangerous. 6 users suspect danger. 7 users think plugin-container.exe is dangerous and recommend removing it. 5 users don't grade plugin-container.exe ("not sure about it").

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Best practices for resolving plugin-container issues

A clean and tidy computer is the key requirement for avoiding problems with plugin-container. This means running a scan for malware, cleaning your hard drive using 1cleanmgr and 2sfc /scannow, 3uninstalling programs that you no longer need, checking for Autostart programs (using 4msconfig) and enabling Windows' 5Automatic Update. Always remember to perform periodic backups, or at least to set restore points.

Should you experience an actual problem, try to recall the last thing you did, or the last thing you installed before the problem appeared for the first time. Use the 6resmon command to identify the processes that are causing your problem. Even for serious problems, rather than reinstalling Windows, you are better off repairing of your installation or, for Windows 8 and later versions, executing the 7DISM.exe /Online /Cleanup-image /Restorehealth command. This allows you to repair the operating system without losing data.

To help you analyze the plugin-container.exe process on your computer, the following programs have proven to be helpful: ASecurity Task Manager displays all running Windows tasks, including embedded hidden processes, such as keyboard and browser monitoring or Autostart entries. A unique security risk rating indicates the likelihood of the process being potential spyware, malware or a Trojan. BMalwarebytes Anti-Malware detects and removes sleeping spyware, adware, Trojans, keyloggers, malware and trackers from your hard drive.

Other processes

plugin-container.exe [all]