What is Mozilla.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 Mozilla.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 Mozilla.exe related errors

Mozilla.exe file information

The process known as Mozilla belongs to software Mozilla by Mozilla Foundation (

Description: Mozilla.exe is not essential for the Windows OS and causes relatively few problems. The file Mozilla.exe is located in a subfolder of "C:\Program Files" (mostly C:\Program Files\\Mozilla\). Known file sizes on Windows 10/8/7/XP are 100,752 bytes (66% of all occurrences) or 19,456 bytes. 
Mozilla.exe is not a Windows system file. The program listens for or sends data on open ports to a LAN or the Internet. Mozilla.exe is able to monitor applications. Therefore the technical security rating is 30% dangerous; however you should also read the user reviews.

Uninstalling this variant: If there are any problems with Mozilla.exe, you can also uninstall the program using the Control Panel ⇒ Uninstall a ProgramMozilla Firefox.

Recommended: Identify Mozilla.exe related errors

External information from Paul Collins:

Important: Some malware camouflages itself as Mozilla.exe, particularly when located in the C:\Windows or C:\Windows\System32 folder, for example Trojan-PSW.Win32.Quarian.pfb (detected by Kaspersky), and Trojan.Gen (detected by Symantec). Therefore, you should check the Mozilla.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

Mozilla, the best browser
  Pak   (further information)
The Ultimate browser!
  dannyboy1   (further information)
Safer than Microsoft Internet Explorer anyway
Excellent Borwser
    (further information)
Mozilla browser and email client, very good

Summary: Average user rating of Mozilla.exe: based on 11 votes with 6 user comments. 11 users think Mozilla.exe is essential for Windows or an installed application.

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Best practices for resolving Mozilla issues

A clean and tidy computer is the key requirement for avoiding problems with Mozilla. 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 Mozilla.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

Mozilla.exe [all]