What is TMERzCtl.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 TMERzCtl.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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TMERzCtl.EXE file information

Windows Task Manager with TMERzCtl
TMERzCtl.EXE process in Windows Task Manager

The process known as TMERzCtl belongs to software TOSHIBA Mobile Extension3 for or TOSHIBA Mobile Extension3 or TOSHIBA TMERzCtl or TOSHIBA Mobile Extension3 for Windows XP by TOSHIBA (

Description: TMERzCtl.EXE is not essential for Windows and will often cause problems. The file TMERzCtl.EXE is located in a subfolder of "C:\Program Files" (typically C:\Program Files\TOSHIBA\TME3\). Known file sizes on Windows 10/8/7/XP are 90,112 bytes (30% of all occurrences), 86,016 bytes and 5 more variants. 
The software starts when Windows starts (see Registry key: MACHINE\Run). TMERzCtl.EXE is not a Windows core file. The program is not visible. Therefore the technical security rating is 49% dangerous; however you should also read the user reviews.

Uninstalling this variant: If you run into problems with TMERzCtl.EXE, you could also uninstall TOSHIBA Mobile Extension3 for or TOSHIBA Mobile Extension3 software via Windows Control Panel/Add or Remove Programs (Windows XP) or Programs and Features (Windows 10/8/7).

Recommended: Identify TMERzCtl.EXE related errors

External information from Paul Collins:

Important: Some malware camouflages itself as TMERzCtl.EXE. Therefore, you should check the TMERzCtl.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

Possibly something to do with Toshiba Mobile Extension?
This process is not a critical Process. Terminating will not have any effect on your system at all. If it annoys you, remove it from the Windows Startup List.

Summary: Average user rating of TMERzCtl.EXE: based on 1 vote with 2 user comments. One user thinks it's neither essential nor dangerous. One user is not sure about it.

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Best practices for resolving TMERzCtl issues

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

TMERzCtl.EXE [all]