What is COH32.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 COH32.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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COH32.exe file information

The process known as SONAR Component or COH Application belongs to software SONAR or COH Application by Symantec (

Description: COH32.exe is not essential for the Windows OS and causes relatively few problems. COH32.exe is located in a subfolder of "C:\Program Files\Common Files". Known file sizes on Windows 10/8/7/XP are 1,227,600 bytes (58% of all occurrences), 1,250,656 bytes or 1,230,432 bytes. 
The program is not visible. It is a Verisign signed file. It is digitally signed. It is not a Windows core file. There is no information about the author of the file. COH32.exe is able to manipulate other programs, record keyboard and mouse inputs and monitor applications. Therefore the technical security rating is 25% dangerous; however you should also read the user reviews.

Recommended: Identify COH32.exe related errors

Important: Some malware camouflages itself as COH32.exe, particularly when located in the C:\Windows or C:\Windows\System32 folder. Therefore, you should check the COH32.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

Part of Symantec Shared-Various Symantec applications use the shared virus definition folder \VirusDefs (usually located at C: \Program Files\Common Files\Symantec Shared\VirusDefs). These applications create temporary folders and files under this shared folder.
  Brenda   (further information)
My COH32.exe used up 100% CPU when it runs. Fixed it by uninstalling Norton and re-installing again. For uninstall used Norton Removal Tool.
  Lera   (further information)
It's part of Symantec EndPoint Protection V 11 (could also be part of earlier version). As it's digitally signed and from Symantec, I have no problem with it even though it's CPU utilization occassionally spikes.
As part of Norton AntiVirus it is probably important
This is a process that runs along beside Symantec Antivirus on most programs, It is the proactive scan so will scan files and changed done on the computer in real time. This is normally fine but if you are having 100% cpu issues like one of my customers were then simpally uninstall and reinstall Symantec product, There seams to be a memory and CPU leak
  Matthew Goodman MTA  
but it eats a lot CPU cycles and hence is realy unwanted.
Dienst der SEP, welcher die aktiven Schreibprozesse ├╝berwacht
  Michael   (further information)
Ist Bestandteil von "proaktiver Bedrohungsschutz", "Zero-Day-Schutz vor unbekannten Bedrohungen" = Heuristic

Rating chart

Summary: Average user rating of COH32.exe: based on 10 votes with 8 user comments. 7 users think COH32.exe is essential for Windows or an installed application. 2 users think it's probably harmless. One user thinks COH32.exe is dangerous and recommends removing it. One user is not sure about it.

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Best practices for resolving COH32 issues

A clean and tidy computer is the key requirement for avoiding problems with COH32. 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 COH32.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

COH32.exe [all]