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What does the firefox.exe file do?

The firefox.exe process is also known as Tor Browser or, as the case may be, Firefox Nightly and is a part of Mozilla Firefox (Version 52.9.0 ESR, 52.3.0 ESR) or, as the case may be, Tor Browser. This software is produced by Mozilla (www.mozilla.org) or, as the case may be, Microsoft (www.microsoft.com). An obsolete or defective version of firefox.exe can cause problems for your computer that can range from slowness to error messages such as these:

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What you should know about firefox.exe Tor Browser

firefox.exe is not part of Windows, but it is important nonetheless. Firefox.exe is found in a subdirectory of "C:\Program Files" or sometimes in the "My Documents" folder. Frequently occurring are file sizes such as 275,568 bytes (8% of all these files), 392,136 bytes as well as 82 other variants.
The file is no part of Microsoft Windows. The producer of the file is registered with a certificate authority. This confirms the genuineness of the file. This firefox.exe process is receiving or sending data on the LAN (your local network) or on the Internet. The program executes in the background, and can only be terminated using Windows Task Manager. Firefox.exe is capable of modify other Windows tasks. For this reason, 29% of all experts consider this file to be a possible threat. The probability that it can cause harm is high.

If you see this file on your hard drive or in Windows Task Manager, please make sure that it is not a malicious variant. It's a fact that many trojans try to cloak their true identity by calling themselves firefox.exe. With the above information or by using tools like Security Task Manager you can determine if, in your case, the file is an undesirable variant.

What do other computer users say about firefox?

This is a Browser! It isnt Dangerous. Sorry 4 my Bad Englisch :P
Great Browser. Safe alternative to IE. Recommend A+
Best browser available :) (further information...)
Mozilla Firefox web browser
This is THE browser.

Summary: 97 users judge firefox.exe to be an essential file that should not be touched. 16 users consider it harmless. However, 5 users consider this to be a suspicious process and would like to get rid of it. For this reason, 19 users have already deleted firefox.exe. source: file.net

How to uninstall Mozilla Firefox or Tor Browser

To remove Tor Browser from your computer, please follow the manual instructions below or use an automatic uninstaller product.

  1. Click the Windows Start Button. You find it in the lower left corner of the taskbar.
  2. Type the word uninstall.
  3. Click Add or remove programs.
  4. Now locate Mozilla Firefox or Tor Browser in the list of displayed applications.
  5. Click the program, and then click Uninstall.
Remove software in Windows 10
firefox.exe Tor Browser fix

How to tell if firefox.exe (Tor Browser) was uninstalled cleanly

After uninstalling, restart your computer. Then start Windows Explorer and see if there is still a folder with the name of the software under C:\Program Files. Be sure to check the Registry as well for remnants of Tor Browser. To do this, start "Regedit", then look under "HKEY_LOCAL_MACHINE" > "Software" for Tor Browser or the name of the producer. Always keep in mind that only a computer professional should ever directly delete entries in the Windows Registry.

What to do if a program does not uninstall

The easiest way to remove any kind of software cleanly and accurately is to use an uninstaller tool. Because the uninstaller automatically creates a backup, there is no risk of anything going wrong.

Last but not least

If Windows not working quite right for you, or if startup is taking a long time, or firefox.exe is causing problems for you, a good Windows diagnostic tool may very well help. This is especially effective when it comes to older computers that have accumulated vast quantities of "garbage data" as the result of many software installs and uninstalls.

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