What is STacSV.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 STacSV.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.

Click to Run a Free Scan for STacSV.exe related errors

STacSV.exe file information

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

The process known as STacSV Module or IDT PC Audio or IDT PC Audio - SHANGHAI DEVELOPMENT CENTER or stacsv.ex

belongs to software C-Major Audio or IDT Audio or SigmaTel Audio or IDT PC Audio or Audio Service or SigmaTel Audio Service or Tempo Semiconductor

by SigmaTel ( or IDT ( or Tempo Semiconductor.

Description: STacSV.exe is not essential for Windows and will often cause problems. STacSV.exe is located in the C:\Windows\System32 folder. Known file sizes on Windows 10/8/7/XP are 102,400 bytes (29% of all occurrences), 90,112 bytes and 9 more variants. 
The program has no visible window. The file is not a Windows core file. It is located in the Windows folder, but it is not a Windows core file. STacSV.exe is able to hide itself. Therefore the technical security rating is 38% dangerous; however you should also read the user reviews.

Recommended: Identify STacSV.exe related errors

Important: Some malware camouflages itself as STacSV.exe, for example TROJ_PAKES.AZC (detected by TrendMicro), and Trojan:Win32/Malagent (detected by Microsoft). Therefore, you should check the STacSV.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

I tried to kill the process; it gave me error: access denied.
Service Name: Audio Service Service description: Manages audio jack configurations. Executed file: C:\Program Files\IDT\WDM\STacSV.exe MyNote: really stupid service. Produce huge loading on computer.
  Alexey K  
My one was located in Program Files, i searched it and it says it was a virus, so i disabled it
It is an annoying error and virus! It comes with ITM or Sigmatel Audio, just uninstall it!
It's nothing but a audio drvier,not dangerous at all
it is an audio application and can be ended, It used a lot of CPU of startup.
it caused an expection / bluescreen on my HP ProBook 650b during startup , I deinstalled the sounddrivers, now the system crashed somewhere else ... I can not blame STacSV.exe for being the problem.
  Gerd K.  
it's using all my cpu. im not a techy i just want to smash my laptop when this happens
More comments can be found here:
    (further information)

Rating chart

Summary: Average user rating of STacSV.exe: based on 51 votes with 9 reviews. 20 users think STacSV.exe is essential for Windows or an installed application. 6 users think it's probably harmless. 14 users think it's neither essential nor dangerous. 7 users suspect danger. 4 users think STacSV.exe is dangerous and recommend removing it. 12 users don't grade STacSV.exe ("not sure about it").

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Best practices for resolving STacSV issues

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

STacSV.exe [all]