What is commagent.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 commagent.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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Commagent.exe file information

The process known as CommAgent or ComAgent belongs to software Webroot Client or ComAgent by Webroot Software (

Description: Commagent.exe is not essential for the Windows OS and causes relatively few problems. The commagent.exe file is located in a subfolder of "C:\Program Files". Known file sizes on Windows 10/8/7/XP are 709,488 bytes (44% of all occurrences), 1,871,872 bytes and 4 more variants. 
The program has no visible window. The commagent.exe file is not a Windows core file. The application listens for or sends data on open ports to a LAN or the Internet. The software can be removed using the Control Panel's Add\Remove programs applet. The file is a Verisign signed file. The file has a digital signature. Commagent.exe is able to connect to the Internet, record keyboard and mouse inputs and monitor applications. Therefore the technical security rating is 40% dangerous, however you should also read the user reviews.

Uninstalling this variant: You could uninstall the associated program (Start > Control Panel > Uninstall a Program > Webroot® Client or Webroot Spy Sweeper).

Recommended: Identify commagent.exe related errors

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


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Best practices for resolving commagent issues

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

commagent.exe [all]