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 WindowsNT and Windows9X or ATI External Event Utility for Windows 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 8/7/XP are 405,504 bytes (12% of all occurrences), 376,832 bytes and 102 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 28% dangerous; however you should also read the user reviews.
The software vendor offers the option to uninstall HijackThis or Athena software via Windows Control Panel/Add or Remove Programs (Windows XP) or Programs and Features (Windows 8/7/Vista).

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

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.
This started take almost 80percent of my CPU suddenly. (May have some ralation with Open Office or Adobe Light Room)
  Kasun Rajapaksha  
If you're running the wrong driver for your ATI card then this program can malfunction. When it goes wrong it can take down an XP box.
  Liam (SiX) Deeney  
More comments can be found here:
    (further information)

Rating chart

Summary: Average user rating of Ati2evxx.exe: based on 218 votes with 9 reviews. 116 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. 17 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 doing a repair of your installation, or in the case of Windows 8, 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]