What is dxdiag.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 dxdiag.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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Dxdiag.exe file information

Windows Task Manager with dxdiag
Dxdiag.exe process in Windows Task Manager

The process known as dxdiag.exe belongs to software Microsoft Windows Operating System or Betriebssystem Microsoft Windows by Microsoft (

Description: Dxdiag.exe is not essential for the Windows OS and causes relatively few problems. Dxdiag.exe is located in a subfolder of the user's profile folder. Known file sizes on Windows 10/8/7/XP are 24,619 bytes (25% of all occurrences), 44,544 bytes, 38,912 bytes or 192,000 bytes. 
The program has a visible window. Dxdiag.exe is a file with no information about its developer. The program starts upon Windows startup (see Registry key: User Shell Folders). The file is not a Windows core file. Therefore the technical security rating is 36% dangerous, however you should also read the user reviews.

Recommended: Identify dxdiag.exe related errors

Important: Some malware camouflages itself as dxdiag.exe, particularly when located in the C:\Windows or C:\Windows\System32 folder, for example Artemis!F653A754A458 (detected by McAfee), and Trojan.Generic.KD.548428 (detected by BitDefender). Therefore, you should check the dxdiag.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

mine need to be updated as I had to reset my computer to factory settings and not all windows updates up loaded some failed and I cant get them to upload
  Ruth Mackenzie  
  an da  

Summary: Average user rating of dxdiag.exe: based on 3 votes with 2 user comments. 2 users think dxdiag.exe is essential for Windows or an installed application. One user thinks it's probably harmless. One user is not sure about it.

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Best practices for resolving dxdiag issues

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

dxdiag.exe [all]