What is kmw_run.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 kmw_run.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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Kmw_run.exe file information

Windows Task Manager with kmw_run
Kmw_run.exe process in Windows Task Manager

The process known as Kensington MouseWorks Win32 Support belongs to software KMW by Kensington Technology Group (

Description: Kmw_run.exe is not essential for the Windows OS and causes relatively few problems. Kmw_run.exe is located in the C:\Windows\System32 folder or sometimes in a subfolder of C:\Windows. Known file sizes on Windows 10/8/7/XP are 106,496 bytes (64% of all occurrences), 118,784 bytes or 102,400 bytes. 
There is no file information. The kmw_run.exe file is not a Windows core file. The program is not visible. Kmw_run.exe is an unknown file in the Windows folder. The process starts when Windows starts (see Registry key: MACHINE\Run). It can change the behavior of other programs or manipulate other programs. Kmw_run.exe is able to hide itself. Therefore the technical security rating is 79% dangerous; however you should also read the user reviews.

Recommended: Identify kmw_run.exe related errors

External information from Paul Collins:

Important: Some malware camouflages itself as kmw_run.exe. Therefore, you should check the kmw_run.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

Kensington Mouse (Trackball) When I downloaded the cd that came with it my spyware detector found a couple of things-may be false positives as I haven't seen any other comments but do a scan after installing to be sure-mine works fine after deleting the (possible) adware
Comes with Kensington mouse (trackball). It is possible that it is spyware. However, the reason it is put in high risk is because it needs to be able to take and push basic windows functions. Reason being, it has a few extra buttons giving the user the ability to assign commands to each, these may be unique to each program.
Kensington Wireless Mouse driver
the mouse I bought worked fine before installing software, and after installing software, I have to reboot laptop sometimes if mouse is not plugged in and I want to use the Latptop mouse, it seems to have caused more problems then any real purpose
  Jason Hall  
It's a parasite.. I cant uninstall it! OMG! and it's a lousy product.. limited range.. and on start up.. if its not being used.. it locks up my Toshiba Lap top touch pad... I had to roll back my start up files......
After installation ..I have to reboot to get my touch pad to work.. if my USB Kensington wireless mouse isnt plugged in.
conflicts with Microsoft Update
i have the track ball version and experience problems when my laptop goes to sleep. when it wakes up neither the mouse pad or joy stick work properly, the pointer just hovers around the edges of the screen. i have to plug in my usb mouse to make it do anything. definitely would not recommend this product.
I have used the Kensington Mouse Works track balls, THREE MODELS and KMW is not malware or anything bad. I couldn't work my audio-video editing work witout my track ball. Used them since 1999. I use XP Pro SP3.
  Tom 2012 February  
It is the software and drivers for a Kensington trackball.
  Mark Schuster   (further information)

Rating chart

Summary: Average user rating of kmw_run.exe: based on 11 votes with 10 user comments. 7 users think kmw_run.exe is essential for Windows or an installed application. One user thinks it's probably harmless. 2 users think it's neither essential nor dangerous. One user thinks kmw_run.exe is dangerous and recommends removing it. 3 users don't grade kmw_run.exe ("not sure about it").

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Best practices for resolving kmw_run issues

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

kmw_run.exe [all]