What is McSACore.exe?

The genuine McSACore.exe file is a software component of McAfee SiteAdvisor by McAfee.
McAfee SiteAdvisor is web service for determining the safety and validity of online websites and services. Mcsacore.exe runs a core process that belongs to McAfee SiteAdvisor. This is not a core Windows application and may be uninstalled if known to cause problems.

McAfee SiteAdvisor is a cross-platform application that reports on the safety of web sites through a web crawler that scans the web and gathers information on websites which may present the possibility of phishing, viruses, malware, and other harmful behavior. The program provides a browser plug-in that rates links found in email and instant messenger chats. The program has faced some criticism regarding incorrect identification of trustworthy websites.

McAfee, Inc. is an American company that develops solutions in computer software security. It is the world's largest company that is dedicated entirely to the development and distribution of security software. The company was founded in 1987 by John McAfee as McAfee Associates. Intel acquired McAfee on February 28, 2011 for $7.68 billion. In 2017, Intel turned the company into a standalone enterprise but continues to own a 49% stake. McAfee is currently headquartered in Santa Clara, California, USA.

McSACore stands for McAfee SiteAdvisor Core

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 McSACore.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 McSACore.exe related errors

McSACore.exe file information

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

The process known as SiteAdvisor or McAfee WebAdvisor belongs to software McAfee SiteAdvisor or McAfee WebAdvisor or McAfee SiteAdvisor Enterprise or McAfee Virtual Technician or SiteAdvisor Enterprise Plus or McAfee SiteAdvisor Enterprise Plus by McAfee (

Description: McSACore.exe is not essential for the Windows OS and causes relatively few problems. The McSACore.exe file is located in a subfolder of "C:\Program Files (x86)" (usually C:\Program Files (x86)\McAfee\SiteAdvisor\ or C:\Program Files (x86)\McAfee\SiteAdvisor Enterprise\). Known file sizes on Windows 10/8/7/XP are 154,856 bytes (7% of all occurrences), 103,472 bytes and 32 more variants. 
The process is a service (McAfee SiteAdvisor) running invisible in the background.
The program has no visible window. The file is a Verisign signed file. The file is digitally signed. McSACore.exe is not a Windows core file. Therefore the technical security rating is 16% dangerous; but you should also compare this rating with the user reviews.

Uninstalling this variant: If problems with McAfee WebAdvisor or McAfee SiteAdvisor come up, you may want to do the following:
  1) uninstall it from your computer using the Control Panel applet Uninstall a Program
  2) contact Customer Service.

Recommended: Identify McSACore.exe related errors

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

E' di McAfee
McAfee Site Advisor Service. Core support service for the McAfee Site Advisor browser integrated website safety rating service. McAfee Site Advisor is software which integrates with your browser (Internet Explorer and FireFox are the two supported browsers) and which provides two features : An icon in the top right-hand corner of your browser which shows the safety level of the website you are currently on, and, additionally, when you search in Google or other search engines, it displays a safety rating against each result enabling you to decide whether to investigate a result or not.
  Rob   (further information)

Summary: Average user rating of McSACore.exe: based on 3 votes with 2 user comments. 3 users think McSACore.exe is essential for Windows or an installed application.

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Best practices for resolving McSACore issues

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

McSACore.exe [all]