What is cnsemain.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 cnsemain.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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Cnsemain.exe file information

Windows Task Manager with cnsemain
Cnsemain.exe process in Windows Task Manager

The process known as Canon Solution Menu EX belongs to software Canon Solution Menu EX by CANON INC (

Description: Cnsemain.exe is not essential for Windows and will often cause problems. Cnsemain.exe is located in a subfolder of "C:\Program Files". Known file sizes on Windows 10/8/7/XP are 1,185,112 bytes (40% of all occurrences), 1,637,496 bytes and 4 more variants. 
Cnsemain.exe is digitally signed. The file is not a Windows core file. It is a Verisign signed file. The software starts when Windows starts (see Registry key: MACHINE\Run). The program is not visible. Therefore the technical security rating is 28% dangerous, however you should also read the user reviews.

Uninstalling this variant: In case of any problems with cnsemain.exe, you can uninstall Canon Solution Menu EX from your computer using the Control Panel applet Uninstall a Program.

Recommended: Identify cnsemain.exe related errors

Important: Some malware camouflages itself as cnsemain.exe. Therefore, you should check the cnsemain.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

I just got a notice from my Bitdefender Ransomware Protection that it has blocked cnsemain do exe from running--it doesn't like the looks of cnsemain at all and the bit of reading I've done on it tells me that I should leave well enough alone. Since it's not essential, I'm not going to allow it to run.
  William Miller  

Summary: Average user rating of cnsemain.exe: based on 1 vote with 1 user comment. One user suspects danger.

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Best practices for resolving cnsemain issues

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

cnsemain.exe [all]