What is atieclxx.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 atieclxx.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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Atieclxx.exe file information

Windows Task Manager with atieclxx
Atieclxx.exe process in Windows Task Manager

The process known as AMD External Events Client Module belongs to software AMD External Events by AMD (

Description: Atieclxx.exe is not essential for Windows and will often cause problems. Atieclxx.exe is located in the C:\Windows\System32 folder. Known file sizes on Windows 8/7/XP are 348,160 bytes (25% of all occurrences), 393,216 bytes and 24 more variants. 
The program is not visible. It is a Microsoft signed file. The file is not a Windows system file. Therefore the technical security rating is 18% dangerous, however you should also read the user reviews.

Recommended: Identify atieclxx.exe related errors

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

Atieclxx.exe MAY be a virus/infected by one in ANY case, if Your motherboard has no ati onboard graphics and no ati graphicscard but still have it running...
atieclxx.exe is essential for Windows or an installed application.
  Kriss Chaos  
Legit, What Mike said: unless you have no ATI hardware, then could possibly be a virus.
Size on Windows 7 (clean install) 480,256 bytes (483,328 on disk)
Part of the AMD/ATI driver
File does not have a User Name or Description in Windos Task Manager. when attempting to open the file location, no folder opens in windows explorer. However the website Tom's Hardware reports it is a part of the ATI control panel
I cleared it once, and it came back. It makes my hard drive thrash itself to death, so whether it is or is not a virus, it is dangerous and needs to go.
Graphics software for AMD built in graphics, common in Toshiba laptops, nothing to worry about.
  Confabulated   (further information)
Part of the AMD/ATI driver
Part of the ATI External Events Client Module installed with ATI display driver...switch off ATI External Event Service to turn off functionality
software for ATI Radeon graphic adapter. ATI was acquired by AMD in 2006. If you have problems, please update your ATI driver.
  Martin   (further information)
It causes slow downs I have an on board ati card and disabled it in bios and conflict with my nvidea card, got rid of it once and it came back, it is protected and atrributes can't be changed in command prompt to remove it.
ATI drivers. Even nvidia GPU users with ATI chipsets on their motherboard may still have this running as a normal boot driver.
It is an important file that will cause AMD drivers to screw up if deleted, but can be infected.
I have found two C: \ Windows \ System32 \ actieclxx.exe large 443kb. C: \ Windows/System32 \ DriverStore \ cl151639.inf_061548e7 \ B149756 \ actieclxx.exe large 443kb. In 1012 kb large task management.
I found it after a general slowdown and my hard drive going flatout. It is not in my windows/system directory and I am having trouble removing it.
AMD External Events Client Module Size: 574 KB (588,288 bytes)
it's clerly a virus it crashed the game I was playing
It has no properties nor can it be located on the disc in windows 7 Enterprise Edition. Its using 00 CPU and 1,072K memory. 1 of only 2 processes that show no description or user name in Task Manager. I do have an ATI Graphics card.I'm going to keep it. After I ran a few malware scans it seems OK.

Rating chart

Summary: Average user rating of atieclxx.exe: based on 33 votes with 19 user comments. 12 users think atieclxx.exe is essential for Windows or an installed application. 9 users think it's probably harmless. 4 users think it's neither essential nor dangerous. 5 users suspect danger. 3 users think atieclxx.exe is dangerous and recommend removing it. 4 users don't grade atieclxx.exe ("not sure about it").

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Best practices for resolving atieclxx issues

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

atieclxx.exe [all]