What is coreServiceShell.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 coreServiceShell.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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CoreServiceShell.exe file information

Windows Task Manager with coreServiceShell
CoreServiceShell.exe process in Windows Task Manager

The process known as Trend Micro Anti-Malware Solution Platform belongs to software Trend Micro Titanium or Trend Micro Titanium Internet Security or Trend Micro™ Titanium™ Maximum or Trend Micro™ Titanium™ Maximum Security or TELUS security services or Virgin Media Security by Trend Micro (

Description: CoreServiceShell.exe is not essential for Windows and will often cause problems. The file coreServiceShell.exe is located in a subfolder of "C:\Program Files". Known file sizes on Windows 10/8/7/XP are 200,632 bytes (11% of all occurrences), 345,920 bytes and 12 more variants. 
The program has no visible window. The coreServiceShell.exe file is digitally signed. The coreServiceShell.exe file is not a Windows system file. CoreServiceShell.exe is a Verisign signed file. The software listens for or sends data on open ports to a LAN or the Internet. CoreServiceShell.exe is able to monitor applications. Therefore the technical security rating is 25% dangerous, however you should also read the user reviews.

Uninstalling this variant: You could remove the entire program Trend Micro Titanium or Trend Micro™ Titanium™ Internet Security using Windows Control Panel.

Recommended: Identify coreServiceShell.exe related errors

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

big prob on bud's box. trend micro not good
I know that it hogs resources, that it is associated with Trend Micro, and that I can't kill the process with Task Manager.
My computer has 8gb memory and always used up to 96%memory, I tried so many method and finally I have ended the process of coreServiceShell in Resource Monitor, the Physical Memory recovered immediately from 86% to 43%, I think it is a virus.
I had increasing memory usage (coreServiceShell.exe) on powering up my system recently. Also same issue with windows media sharing service. So I disabled WMSS and coreServiceShell.exe behaved itself - problem solved (I think)
  Peter H.  
CoreServiceShell.exe is the PRIMARY guts of TrendMicro AntiVirus software and should never be deleted if someone has installed a legitimate copy of TrendMicro. As far as not being essential to Windows, it may not come from Redmond but it protects Windows far better than MS Security Essentials could ever hope to.
  Robert Weaver, 52 year retired IT  
According to me, "the Trend Micro" is the best antivirus I've ever accidentally installed. Much because of I don't have to care, the program will automatically remove most threats. When it comes to coreServiceShell.exe it helps a lot when Using programs like, "Tunngle" or "Hamachi". To automatically create the "links" rather than fiddle with port forwards.
Gehört zum Antivirenprogramm Trend Micro
It randomly starts using 50% or more of my cpu and slows my pc down for 20-40 minutes at a time. When it starts doing so, I have no choice but to wait and hope it stops because Task Manager cannot kill the process
  I have used  
CoreServiceShell.exe frequently uses 180Mb on a PC which hasn't been online in two years.

Rating chart

Summary: Average user rating of coreServiceShell.exe: based on 8 votes with 9 user comments. 3 users think coreServiceShell.exe is essential for Windows or an installed application. 2 users think it's probably harmless. One user thinks it's neither essential nor dangerous. 2 users suspect danger. One user is not sure about it.

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Best practices for resolving coreServiceShell issues

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

coreServiceShell.exe [all]