What is Ati2evxx.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 Ati2evxx.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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Ati2evxx.exe file information

Windows Task Manager with Ati2evxx
Ati2evxx.exe process in Windows Task Manager

The process known as ATI External Event Utility EXE Module or Ati HotKey Poller belongs to software ATI External Event Utility for Windows or ATI External Event Utility for WindowsNT and Windows9X or Ati HotKey Poller by ATI Technologies (

Description: Ati2evxx.exe is not essential for the Windows OS and causes relatively few problems. Ati2evxx.exe is located in the C:\Windows\System32 folder. Known file sizes on Windows 10/8/7/XP are 602,112 bytes (19% of all occurrences), 405,504 bytes and 89 more variants. 
The program has no visible window. The file is not a Windows system file. It is a Microsoft signed file. Ati2evxx.exe is able to monitor applications and hide itself. Therefore the technical security rating is 35% dangerous; however you should also read the user reviews.

Recommended: Identify Ati2evxx.exe related errors

External information from Paul Collins:

Important: Some malware camouflages itself as Ati2evxx.exe, for example Trojan.Generic.IS.419769 (detected by BitDefender), and Backdoor.Win32.Hupigon.jdit or (detected by Kaspersky). Therefore, you should check the Ati2evxx.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

your download has pup spyware inbedded in it ,as picked up by malawarebytes pro
I use it all the time safely. However, the program "Stellar Phoenix Outlook Express Recovery\spoer.exe" will not run if ati2evxx.exe is active. If you want to run "Stellar Phoenix Outlook Express Recovery\spoer.exe" then cancel ati2evxx.exe's 2 tasks and then you can run "Stellar Phoenix Outlook Express Recovery\spoer.exe" to repair Outlook Express .dbx files. Then when your .dbx files are fixed you can restart your system to restart ati2evxx.exe. The support people at "Stellar Data Recovery" are not logical, they not supportive, they are not well informed and they are quite arrogant. My opinion of them is based on "working" with them for 3 days. They have a "do it our way" attitude and do not listen to logic of any sort. Booooo on Stallar Data Recovery's support services.
ati2evxx.exe is a Windows process that works with your display adapter. Yes there are probably viruses, worms etcetera out there with the same name, but 9 times out of ten it will be part of the display adapter. DO NOT and I repeat DO NOT delete it until you consult with a computer professional, or someone who is really experienced with computers, whether it needs to be deleted or not. You never start just deleting files on your system because someone else on a forum says its a virus. Do you research on it and thoroughly investigate before taking action. Just deleting a file off your computer because someone else says it dangerous, could cause more problems on your computer, if you are not careful.
If the file is in the startup directory it is a virus.
After doing a "save nothing" update from Vista to Windows 8 Pro, and installing the ATI CCC, Task Manager showed ati2evxx.exe using 85-99% of CPU. I disabled ati2evxx.exe and all ran as I expected, including the exclusive use of an external (2nd) monitor.
It can suddenly start using 100% of your resources. Go to services.msc and disable ATI Hotkey Poling which is not needed by most people.
Listed in Windows Services as: Ati Hotkey Poller. No hotkeys set - can disable it.
  Irwin Mainway   (further information)
For some reason with remote desktop and local user sessions switching it periodically started increasing instances of this process. Session initialization especially for remote log in took tremendous time on my XP. Full computer restart was temporary solution. LOgon/logout/restart went veeeery slow. (tens minutes!!!) Everything is fine after I got rid of it (Hijack this - removed the entry + some unneeded service stopped). Those who have problem with long session log in/log out and remote sessions can take a look at this process.
More comments can be found here:
    (further information)

Rating chart

Summary: Average user rating of Ati2evxx.exe: based on 219 votes with 9 reviews. 117 users think Ati2evxx.exe is essential for Windows or an installed application. 16 users think it's probably harmless. 35 users think it's neither essential nor dangerous. 20 users suspect danger. 31 users think Ati2evxx.exe is dangerous and recommend removing it. 18 users don't grade Ati2evxx.exe ("not sure about it").

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Best practices for resolving Ati2evxx issues

A clean and tidy computer is the key requirement for avoiding problems with Ati2evxx. This means running a scan for malware, cleaning your hard drive using cleanmgr and sfc /scannow, uninstalling programs that you no longer need, checking for Autostart programs (using msconfig) and enabling Windows' Automatic 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 resmon 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 DISM.exe /Online /Cleanup-image /Restorehealth command. This allows you to repair the operating system without losing data.

To help you analyze the Ati2evxx.exe process on your computer, the following programs have proven to be helpful: Security 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. Malwarebytes Anti-Malware detects and removes sleeping spyware, adware, Trojans, keyloggers, malware and trackers from your hard drive.

Other processes

Ati2evxx.exe [all]