Well, the title describes my problem: High CPU and Disk activity by Trend Micro Anti-Malware Solution Platform
Half the world has this problem as it seems when i'm searching on the internet. I've tried all given advice, checked for conflicting software, uninstalled and re-installed Trend Micro. Turned off Microsoft OneDrive.
I would like to know how to properly diagnose this problem. I'm tired of "trying" things to fix it. I'm a software engineer by proffesion and know a thing or two about computers.
This is my last shot for fixing this problem. If not, i will cancel my subscrition. Unfortunately i just payed for another year...
Hope someone can help me with diagnosing instead of given advice "trying" stuff. (because i did it all :))
With regards,
Pascal Loonen
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170 Points
Posted 2 months ago
TM_Kaye, Employee
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2,330 Points
We are sorry that you are encountering this issue on your computer and with the Trend Micro program.
For us to further check and investigate this issue, we would like to know how high is the CPU usage of the Trend Micro program on your computer. Also, the name of the process of the Trend Micro program. If possible, please provide to us the screenshot of your Task Manager and the System Information of your computer.
Does this issue happen every time you use your computer or for a certain time only? Did you encounter this when the Trend Micro program is running a scan or an update? If yes, it is normal for the Trend Micro program to consume a certain amount of it.
Lastly, kindly verify the Trend Micro version installed on your computer.
We will be waiting for your updates.
Have a great day!
Trend Micro Home User Community
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170 Points
Thank you for you reply. I'm happy to see that Trend Micro is so active in this forum.
The process that is consuming the CPU is Trend Micro Anti-Malware Solution Platform -> coreServiceShell.exe.
English is not my native language, i'm from the Netherlands so i'm sorry for any language mistakes i make.
The version of Trend Micro is 12.0.1226.
The cpu usage fluctuates between 20 and 30 percent. And it is continious. It starts right after booting the computer and keeps using that amount of CPU till i shut down. I have multiple Windows computers at home and a Macbook pro protected by your software but this computer (from my son) is the only one that has this problem. And i don't know why, so any help is greatly appreciated. I've added the requested screenshots.
With regards,
Pascal Loonen
TM_Jean, Employee
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3,000 Points
Seems like it does consume too high Memory and, at the same time, CPU. With that, we will need to do a clean installation. Kindly follow the steps below to do the complete removal of remnants.
Uninstallation and Removal of Remnants
1. Press Windows + R, then type in "supporttool". Choose yes when the UAC prompts.
2. In the Diagnostic Toolkit window, go to the Uninstall tab. Click Uninstall Software.
Note: Do the Restart after you complete the steps until step 4.
3. Download the Remnant File Remover through the link below. Right click on the downloaded file and run it as administrator.
Remnant File Remover Tool
4. Download the Permission Tool through the link below and run it as administartor.
Trend Micro Permission Tool
5. Restart the computer.
After that, you may already try installing the program. You may refer to the link below.
Installing Trend Micro Security
We will wait for your update regarding this issue. Thank you!
Trend Micro Home User Community
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170 Points
Thank you for your quick response. I really appreciate this.
I followed your steps, but the "Trend Micro Permission Tool" did give me a 403 forbidden. I've searched google and found the tool on your site and did run it as administrator.
At this moment the process takes about 0,5% CPU :)
For now, it all looks great.
Thank you for your support.
With regards,
Pascal Loonen
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390 Points
4. Download the Permission Tool through the link below and run it as administartor.
Trend Micro Permission Tool
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390 Points
Executing SetACL commands to restore registry and folder permission...
check the hotfix execute mode - 0 (Failed)
Run uninstall tool
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390 Points
-> Operating system - WIN10_0_64
-> User account
- 501
Get programfile permission...
Executing SetACL commands to restore registry and folder permission...
check the hotfix execute mode - 0 (Failed)
Run uninstall tool
check mode 0 or 2? - 0 (Failed)
-> Installation complete
-> Operating system - WIN10_0_64
Installation successful!
TM_Pat, Employee
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4,226 Points
Thank you for your response!
We're glad that we were able to assist you with your concern through this Community. Should you have any other concern, please do not hesitate to reach out to us.
Enjoy the rest of the week!
Trend Micro Home Users Community
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110 Points


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4,310 Points
Did you try to do what TM_Jean suggested, deinstall, use Remnant File Remover and installa again?
Just check TM is not working on an update/scan in the screenshot capture moment...
Tom Emmelot, Champion
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15,654 Points
Hahaha wrote almost the same at the same time!
Kind regards
Tom ;)
Tom Emmelot, Champion
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15,706 Points
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110 Points
After all downloads, hunting for the permission tool, uninstall, download new copy of TM and reinstall it has settled down to normal levels.
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110 Points
I do not think starting with a clean install is a permanent fix as we are installing the same bad application again. This is a band-aid solution that does not take away the pain or scarring.
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14,758 Points
My wife's laptop is now trying to update from Win10 1607 > 1706 for the 20 ste time and i follow all the instructions on the Internet about it to no avail!
I think i go back to Dos ! ;)
I think a lot of the problems come from Windows update!
And the only won that are interested in dat buggy OS is the criminal that hangs on your phone and claims he is from Microsoft and wants to help you to get rit of the virus on your PC, they can see that in the windows log-files and show that to you !!
Software has bugs, i know, i test now for TM for 20 years, OS from win 95 till 10.
Mine PC is not the same as Your PC and i got a lot of other software running on it to.
So problems shall be there always!
Kind regards,
Tom
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110 Points
I have now tried to remove TM and re-install multiple times to no avail.
Tom Emmelot, Champion
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15,706 Points
Did you look for this?
Programs to remove before installing Trend Micro Security
https://esupport.trendmicro.com/en-us/home/pages/technical-support/1061023.aspx
Right, so that worked for a couple of minutes, looks 3 weeks for me!
Here from you.
Kind regards,
Tom
TM_X, Official Rep
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908 Points
Welcome to Trend Micro Community!
Apologies for all this trouble.
It seems that your computer's CPU usage is not high. Also, it is normal if the Trend Micro program consumes a certain amount of the CPU usage because it scans your computer real-time. However, you may improve it further by uninstalling third-party security software. You may check the link that our friend Tom Emmelot posted above for list of programs to be removed before installing the Trend Micro program again.
Waiting for your updates!
Have a great day! :)
Trend Micro Home User Community
- 72 Points
TM_Victor, Employee
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4,334 Points
- 72 Points
Not one for stuffing around so deleted trend, worked heaps better so will prob keep this way and just do more backups and hope defender performs.
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110 Points
TM_X, Official Rep
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856 Points
Please reference the new conversation here: High CPU and Disk Activity
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122 Points
TM_X, Official Rep
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908 Points
I'm sorry to know that you are all experiencing the same issue. I have reported this case to our Technical Specialist for further checking and investigation. I'll send you updates once I hear from them. In the meantime, please be guided by the resolutions posted above. Also, please provide us the following:
- Operating system of the computer
- Version of the Trend Micro program
- Screenshot of the CPU and disk usage
Trend Micro Home User Community
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110 Points
2. Micro Trend Maximum Security Version: 12.0.1226
3. See Below

Have done the "fix" described above several times but it keeps coming back.
- 62 Points
Windows 10 Pro 1709 16299.334
Trend Micro Maximum Security 12.0.1226
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110 Points
TM_X, Official Rep
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856 Points
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