What is McCHSvc.exe?

The genuine McCHSvc.exe file is a software component of McAfee Security Scan or McAfee Security Scan Plus by McAfee LLC.
"McCHSvc.exe" is the main executable program of McAfee LLC's Security Scan or Security Scan Plus, a free tool developed in 2010 to promote McAfee cybersecurity software sales. It often downloads and installs with Adobe Flash Player and other freeware and schedules itself to run weekly. It reports whether antivirus or antimalware programs are present and have current threat definitions. It also accesses the Internet for current McAfee definitions and scans running processes and browsing history. The "FIX" button it displays does not cause any repairs, only recommendations of McAfee software. Its installation path is "C:\Program Files\McAfee Security Scan\%VERSION%\McCHSvc.exe". It can be removed by selecting "McAfee Security Scan" in the Control Panel's uninstall applet. McAfee LLC, now the world's largest company dedicated to computer security, was founded by John McAfee (who later resigned) in 1987, spent several years as "Intel Security Group", and was restored to standalone status in 2017.

McCHSvc stands for McAfee Component Host Service

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 McCHSvc.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.

Click to Run a Free Scan for McCHSvc.exe related errors

McCHSvc.exe file information

Windows Task Manager with McCHSvc
McCHSvc.exe process in Windows Task Manager

The process known as Component Host Service belongs to software McAfee Security Scanner or McAfee Security Scan Plus by McAfee (

Description: McCHSvc.exe is not essential for Windows and will often cause problems. McCHSvc.exe is located in a subfolder of "C:\Program Files (x86)"—mostly C:\Program Files (x86)\McAfee Security Scan\2.0.181\. Known file sizes on Windows 10/8/7/XP are 227,232 bytes (20% of all occurrences), 237,008 bytes and 7 more variants. 
The McCHSvc.exe file is a Verisign signed file. The program is not visible. The file has a digital signature. It is not a Windows core file. Therefore the technical security rating is 12% dangerous; but you should also compare this rating with the user reviews.

Uninstalling this variant: The software vendor offers the option to uninstall McAfee Security Scan Plus software via Windows Control Panel/Add or Remove Programs (Windows XP) or Programs and Features (Windows 10/8/7) or look for help on the website.

Recommended: Identify McCHSvc.exe related errors

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

ate up enormous process and caused system to flip out and malfunction.
on vista machine tried to contact comodoca

Summary: Average user rating of McCHSvc.exe: based on 2 votes with 2 user comments. One user thinks it's neither essential nor dangerous. One user suspects danger.

Do you have additional information? Help other users!

Best practices for resolving McCHSvc issues

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

McCHSvc.exe [all]