What is tmPfw.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 tmPfw.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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TmPfw.exe file information

The process known as Trend Micro Personal Firewall Service or Manages the Trend Micro Personal Firewall or Trend Micro Personal Firewall belongs to software Trend Micro Network Security Components or Trend Network Security Component or Trend Micro Client/Server Security Agent or Trend Micro PC-cillin Internet Security by Trend Micro (

Description: TmPfw.exe is not essential for the Windows OS and causes relatively few problems. TmPfw.exe is located in a subfolder of "C:\Program Files" or sometimes in a subfolder of C:\. Known file sizes on Windows 10/8/7/XP are 497,008 bytes (23% of all occurrences), 585,792 bytes and 9 more variants. 
The program is not visible. TmPfw.exe is not a Windows core file. The program uses ports to connect to or from a LAN or the Internet. It is a Verisign signed file. The file has a digital signature. TmPfw.exe is able to connect to the Internet, record keyboard and mouse inputs and hide itself. Therefore the technical security rating is 36% dangerous, however you should also read the user reviews.

Uninstalling this variant: If you are having problems with tmPfw.exe, you could also remove the entire program Trend Micro Internet Security or Trend Micro PC-cillin using Windows Control Panel, visit the support page or update the program to the latest version.

Recommended: Identify tmPfw.exe related errors

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

modul trend internet secur pc cillin
Trend Micro Firewall Control
Anti-virus scanner
  Chris Mariam   (further information)
Internet Secruity provided by Pc Cillin 2005
part of the Trend Micro Systems Internet Security Suite
  Shane Meluck   (further information)
per "The Ultimate Troubleshooter" TMPFW.EXE has 24 'threads', which is more than twice the next highest running on my PC, and most have about three. This feels excessive.
Pc Cillin Internet
TrendMicro PC-cillin IS Suite component...DO NOT DISABLE!
It will often consume 40-50 percent of your CPU usage. After 20 - 40 minutes it will relinquish the memory.
uses an excessive amount of memory
Causes errors from TrendMicro Internet Security Pro 2008
tmpfw.exe descriptionDescriptiontmpfw.exe is a process associated with a Network Security software from Trend Micro Inc. This process should not be removed to ensure that your system is secure
Trend Personal Firewall Service NOT necessary if you have a reasonable hardware firewall built into your router.
an unbelievable resource hog, very poorly written software
  The Squeegee Man  

Rating chart

Summary: Average user rating of tmPfw.exe: based on 15 votes with 14 user comments. 11 users think tmPfw.exe is essential for Windows or an installed application. 4 users think it's neither essential nor dangerous. 3 users don't grade tmPfw.exe ("not sure about it").

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Best practices for resolving tmPfw issues

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

tmPfw.exe [all]