What is SmcGui.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 SmcGui.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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SmcGui.exe file information

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

The process known as Symantec CMC SmcGui belongs to software Symantec Client Management Component by Symantec (

Description: SmcGui.exe is not essential for the Windows OS and causes relatively few problems. SmcGui.exe is located in a subfolder of "C:\Program Files". Known file sizes on Windows 10/8/7/XP are 1,443,144 bytes (35% of all occurrences), 1,455,432 bytes and 9 more variants. 
There is an icon for this program on the taskbar next to the clock. It is a Verisign signed file. The SmcGui.exe file is certified by a trustworthy company. SmcGui.exe is not a Windows system file. You can uninstall this program in the Control Panel. SmcGui.exe is able to monitor applications. Therefore the technical security rating is 2% dangerous; however you should also read the user reviews.

Uninstalling this variant: The software vendor offers the option to do the following:
  1) uninstall the associated program (Start > Control Panel > Uninstall a Program > Symantec Endpoint Protection or Symantec Endpoint Protection Small)
  2) turn to the software developer, Symantec, for advice
  3) search for an update on the vendor’s website.

Recommended: Identify SmcGui.exe related errors

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

smcgui.exe is a Symantec Agent Firewall from Symantec Corporation. belonging to Symantec(R) Protection Agent and Personal Firewall
It's a shortened version of Synamtec GUI (Graphic User Interface). It's totally harmless, and if you stop the process it will probably stop your Synamtec Antivirus from working.
smcgui.exe is a Symantec Agent Firewall from Symantec Corporation. belonging to Symantec(R) Protection Agent and Personal Firewall Non-system processes like smcgui.exe originate from software you installed on your system. Since most applications store data in your system's registry, it is likely that your registry has suffered fragmentation and accumulated invalid entries which can affect your PC's performance. It is recommended that you check your registry to identify slowdown issues.
  rao   (further information)

Summary: Average user rating of SmcGui.exe: based on 4 votes with 3 user comments. 2 users think SmcGui.exe is essential for Windows or an installed application. One user thinks it's probably harmless. One user thinks it's neither essential nor dangerous.

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Best practices for resolving SmcGui issues

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

SmcGui.exe [all]