What is NPFMntor.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 NPFMntor.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.

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NPFMntor.exe file information

The process known as Norton AntiVirus Firewall Install Monitor belongs to software Norton AntiVirus or Internet Worm Protection by Symantec (

Description: NPFMntor.exe is not essential for the Windows OS and causes relatively few problems. NPFMntor.exe is located in a subfolder of "C:\Program Files"—mostly C:\Program Files\Norton SystemWorks\Norton AntiVirus\IWP\. Known file sizes on Windows 10/8/7/XP are 46,704 bytes (50% of all occurrences), 46,752 bytes or 46,208 bytes. 
The program is not visible. NPFMntor.exe is a Verisign signed file. It is certified by a trustworthy company. It is not a Windows system file. Therefore the technical security rating is 16% dangerous; however you should also read the user reviews.

Uninstalling this variant: If you have any problems with NPFMntor.exe, you can also completely remove SPBBC or Internet Worm Protection (Control Panel ⇒ Uninstall a Program).

Recommended: Identify NPFMntor.exe related errors

External information from Paul Collins:

Important: Some malware camouflages itself as NPFMntor.exe, particularly when located in the C:\Windows or C:\Windows\System32 folder. Therefore, you should check the NPFMntor.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

Norton AV 2005 (aucun problème) Symantec
part of norton 2005
  A Helpful Tipper  
Part of famous antivirus
  Marco   (further information)
another part of norton :/
Remains after installation of Norton Antivirus 2005

Summary: Average user rating of NPFMntor.exe: based on 5 votes with 5 user comments. 3 users think NPFMntor.exe is essential for Windows or an installed application. 2 users think it's neither essential nor dangerous. One user is not sure about it.

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Best practices for resolving NPFMntor issues

A clean and tidy computer is the key requirement for avoiding problems with NPFMntor. This means running a scan for malware, cleaning your hard drive using cleanmgr and sfc /scannow, uninstalling programs that you no longer need, checking for Autostart programs (using msconfig) and enabling Windows' Automatic 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 resmon 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 DISM.exe /Online /Cleanup-image /Restorehealth command. This allows you to repair the operating system without losing data.

To help you analyze the NPFMntor.exe process on your computer, the following programs have proven to be helpful: Security 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. Malwarebytes Anti-Malware detects and removes sleeping spyware, adware, Trojans, keyloggers, malware and trackers from your hard drive.

Other processes

NPFMntor.exe [all]