What is tmcomm?

Tmcomm.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 tmcomm.sys is a Windows system file or if it belongs to an application that you can trust.

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

Tmcomm.sys file information

The process known as TrendMicro Common Module or TrendMicro Common Module NoTrap Build belongs to software ActiveClean or Trend Micro Eyes or AEGIS by Trend Micro (

Description: Tmcomm.sys is not essential for Windows and will often cause problems. Tmcomm.sys is located in the C:\Windows\System32\drivers folder. Known file sizes on Windows 10/8/7/XP are 102,664 bytes (50% of all occurrences), 76,560 bytes and 5 more variants. 
The driver can be started or stopped from Services in the Control Panel or by other programs. The program is not visible. It is a Verisign signed file. The file has a digital signature. Tmcomm.sys is not a Windows system file. There is no detailed description of this service. Tmcomm.sys is able to record keyboard and mouse inputs. Therefore the technical security rating is 19% dangerous; however you should also read the user reviews.

Recommended: Identify tmcomm.sys related errors

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

I am running VIsta and I occasionally get a message that TMCOMM service failed to start and was blocked. It puts an error message in the Event log under System
  Bob is bringing it up as an infected file. I am going to try deleting it... UPDATE: Ok, so I have tracked this thing down to a company called Trend Micro which makes antivirus software like Hijack this. So if you've recently used any of their products you may have it on your pc
  Anthony - I hope this helps   (further information)
It's from Trend Micro. If you're not using their software the easiest way to eliminate any problems is to search for the file and rename the tmcomm.exe to tmcomm.exe.old

Summary: Average user rating of tmcomm.sys: based on 5 votes with 3 user comments. One user thinks it's probably harmless. One user thinks it's neither essential nor dangerous. 2 users suspect danger. One user thinks tmcomm.sys is dangerous and recommends removing it.

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Best practices for resolving tmcomm issues

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

tmcomm.sys [all]