What is TM_CFW?

TM_CFW.sys is a Windows driver. A driver is a small software program that allows your computer to communicate with hardware or connected devices. This means that a driver has direct access to the internals of the operating system, hardware etc. The free file information forum can help you determine if TM_CFW.sys is a Windows system file or if it belongs to an application that you can trust.

Run a free scan to check for TM_CFW drivers in need of updating

TM_CFW.sys file information

The process known as Trend Micro Common Firewall Module (version 2.0, 2.5, 1.2, 2.6(IM i386-fre)) or Trend Micro Common Firewall Module (IM (version i386-fre)) belongs to software Trend Micro Network Security Components or Trend Network Security Component or Trend Micro Common Firewall Module by Trend Micro (

Description: TM_CFW.sys is not essential for the Windows OS and causes relatively few problems. The TM_CFW.sys file is located in the C:\Windows\System32\drivers folder. Known file sizes on Windows 10/8/7/XP are 1,884,585 bytes (27% of all occurrences), 1,939,328 bytes and 5 more variants. 
The driver can be started or stopped from Services in the Control Panel or by other programs. The program has no visible window. There is no detailed description of this service. The TM_CFW.sys file is not a Windows core file. Therefore the technical security rating is 26% dangerous, however you should also read the user reviews.

Uninstalling this variant: The software vendor offers the option to safely remove the program using the uninstall program of Trend Micro PC-cillin or Trend Micro Internet Security (Control Panel ⇒ Uninstall a Program).

Recommended: Identify TM_CFW.sys related errors

If TM_CFW.sys is located in a subfolder of "C:\Program Files", the security rating is 40% dangerous. The file size is 1,831,616 bytes (33% of all occurrences), 1,844,928 bytes or 771,712 bytes. The program is not visible. There is no detailed description of this service. TM_CFW.sys is not a Windows system file. TM_CFW.sys appears to be a compressed file.

Uninstalling this variant: The software vendor offers the option to safely remove the program using the uninstall program of Trend Micro Client/Server or Trend Micro OfficeScan Client (Control Panel ⇒ Uninstall a Program).

Important: Some malware disguises itself as TM_CFW.sys, particularly when not located in the C:\Windows\System32\drivers folder. Therefore, you should check the TM_CFW.sys 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

This is the main firewall file for PC-cillin
  Greg Finzer  
I think I received the Microsoft blue screen of death because of this file!
  Paul Zaepfardo  
reinstall the application to fix issue.
tm_cfw.sys is a Common Firewall software as part of Trend Micro Office Scan
Caused a BSOD for me too. i'll try a reinstall.
I have problem with blue screen many time. now i find the solution. the problem is from Trend Micro antivirus. I just uninstall antivirus and then bluescreen is stop appear
  Vannnarith Nao  

Rating chart

Summary: Average user rating of TM_CFW.sys: based on 8 votes with 6 user comments. 7 users think TM_CFW.sys is essential for Windows or an installed application. One user thinks it's neither essential nor dangerous.

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Best practices for resolving TM_CFW issues

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

TM_CFW.sys [all]