What is ico.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 ico.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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Ico.exe file information

Windows Task Manager with ico
Ico.exe process in Windows Task Manager

The process known as Mouse Suite (version 98 Daemon) belongs to software MouseSuite (version 98) or Lenovo Mouse Suite or Rocketfish (version 2.4GHz Ergo Laser Mouse) by Primax Electronics ( or TPMX Electronics.

Description: Ico.exe is not essential for the Windows OS and causes relatively few problems. Ico.exe is located in the C:\Windows\System32 folder. Known file sizes on Windows 10/8/7/XP are 49,152 bytes (52% of all occurrences), 45,056 bytes and 7 more variants. 
Ico.exe is not a Windows core file. The program is not visible. The application starts when Windows starts (see Registry key: MACHINE\Run, Run). The ico.exe file is an unknown file in the Windows folder. Therefore the technical security rating is 50% dangerous, however you should also read the user reviews.

Recommended: Identify ico.exe related errors

If ico.exe is located in a subfolder of "C:\Program Files", the security rating is 47% dangerous. The file size is 69,632 bytes (40% of all occurrences), 98,304 bytes and 4 more variants. The program is not visible. The program is loaded during the Windows boot process (see Registry key: MACHINE\Run, Run). It is not a Windows core file.

Uninstalling this variant: If you have any problems with ico.exe, you can also visit the website, update the program to the latest version or uninstall the program using the Control Panel ⇒ Uninstall a ProgramMouse Suite.

External information from Paul Collins:

Important: Some malware disguises itself as ico.exe, particularly when not located in the C:\Windows\System32 folder. Therefore, you should check the ico.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

IBM's scrollpoint mouse software. It was added as a fix driver for windows xp.
I also got this from Rocketfish Mouse ware. It slowed my computer so I started Process Monitor and noticed that it accounts for a large part if not the majority of registry access and seems to be looking for data 'not found'. This is junk in my opinion. The Rocketfish Mouse it came with seems OK though.
Used up 70% CPU recourse in Windows7... Crippled My Fujitsu Laptop.
  Mr Smith  
It came with my Rocketfish Mouse software.
on my dell computer, norton 360 has scanned, says it's 'good - there are indications that this file is trustworthy' (which is not the top security status), its icon is a mouse, norton says it's called 'pmx daemon'
its present in my lenovo desktop runing xp
It's part of IBM's scrollpoint software (as well as other manufacturers)
  Devon   (further information)
May also control on screen volume function on a Vaio
More comments can be found here:
    (further information)

Rating chart

Summary: Average user rating of ico.exe: based on 26 votes with 9 reviews. 17 users think ico.exe is essential for Windows or an installed application. 4 users think it's probably harmless. 3 users think it's neither essential nor dangerous. 2 users suspect danger. 6 users don't grade ico.exe ("not sure about it").

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Best practices for resolving ico issues

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

ico.exe [all]