What is Ati2mdxx.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 Ati2mdxx.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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Ati2mdxx.exe file information

Windows Task Manager with Ati2mdxx
Ati2mdxx.exe process in Windows Task Manager

The process known as ATI 2D Mode component belongs to software ATI 2D Component or ATI Default Resolution Update by ATI Technologies (

Description: Ati2mdxx.exe is not essential for the Windows OS and causes relatively few problems. The file Ati2mdxx.exe is located in the C:\Windows\System32 folder. Known file sizes on Windows 10/8/7/XP are 28,672 bytes (71% of all occurrences), 26,112 bytes, 65,536 bytes, 16,310 bytes or 25,088 bytes. 
The program has a visible window. The program starts when Windows starts (see Registry key: MACHINE\Run). It is not a Windows core file. The file is a trustworthy file from Microsoft. Therefore the technical security rating is 4% dangerous; however you should also read the user reviews.

Recommended: Identify Ati2mdxx.exe related errors

External information from Paul Collins:
There are different files with the same name:

Important: Some malware disguises itself as Ati2mdxx.exe, particularly when not located in the C:\Windows\System32 folder. Therefore, you should check the Ati2mdxx.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

ati2mdxx.exe is installed alonside the hardware drivers of the ATI Radeon graphics card range. This program is a non-essential system process, but should not be terminated unless suspected to be causing problems.
For ATI video cards. System Tray access to display mode changing
It's only rated "2" because it sets itself to run, even though the system tray icon is disabled. Otherwise, no harm, no foul. If you do enable the system tray icon for quick access, it will add itself to the startup menu again.
eats many system resources, causes lags in games
a driver for ATI grafics
ATI video card mode changer, installer configures Windows to run this program at each boot (even if the user chooses to hide the icon)

Rating chart

Summary: Average user rating of Ati2mdxx.exe: based on 13 votes with 6 user comments. 8 users think Ati2mdxx.exe is essential for Windows or an installed application. 4 users think it's probably harmless. One user suspects danger. 2 users don't grade Ati2mdxx.exe ("not sure about it").

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Best practices for resolving Ati2mdxx issues

A clean and tidy computer is the key requirement for avoiding problems with Ati2mdxx. 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 Ati2mdxx.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

Ati2mdxx.exe [all]