What is HdAudio.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 HdAudio.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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HdAudio.exe file information

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

The process known as High Definition Audio Function Driver appears to belong to software unknown by Microsoft (

Description: HdAudio.exe is not essential for Windows and will often cause problems. HdAudio.exe is located in a subfolder of the user's profile folder. Known file sizes on Windows 10/8/7/XP are 13,312 bytes (40% of all occurrences), 145,408 bytes, 12,800 bytes or 62,976 bytes. 
The process has no file description. The program is not visible. The software is loaded during the Windows boot process (see Registry key: Run, RunOnce). It is not a Windows core file. HdAudio.exe is able to manipulate other programs. Therefore the technical security rating is 74% dangerous.

Recommended: Identify HdAudio.exe related errors

Important: Some malware also uses the file name HdAudio.exe, for example Gen:Variant.Zusy.77697 (detected by F-Secure), and TROJ_GEN.R30C2H6 or TROJ_GEN.R47C2AI (detected by TrendMicro). Therefore, you should check the HdAudio.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.


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Best practices for resolving HdAudio issues

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

HdAudio.exe [all]