Volumetric Audio Compositor Service - Windows 11 Service
Hosts spatial analysis for Mixed Reality audio simulation.
This service also exists in Windows 10.
Startup Type
| Windows 11 version | Home | Pro | Education | Enterprise |
|---|---|---|---|---|
| 21H2 | Manual | Manual | Manual | Manual |
| 22H2 | Manual | Manual | Manual | Manual |
| 23H2 | Manual | Manual | Manual | Manual |
| 24H2 | not exists | not exists | not exists | not exists |
Default Properties
| Display name: | Volumetric Audio Compositor Service |
| Service name: | VacSvc |
| Type: | own |
| Path: | %WinDir%\System32\svchost.exe -k LocalServiceNetworkRestricted -p |
| File: | %WinDir%\System32\vac.dll |
| Error control: | normal |
| Group: | AudioGroup |
| Object: | NT AUTHORITY\LocalService |
Default Behavior
The Volumetric Audio Compositor Service is running as NT AUTHORITY\LocalService in its own process of svchost.exe. No other services run in the same process. If Volumetric Audio Compositor Service fails to start, the error is logged. Windows 11 startup proceeds, but a message box is displayed informing you that the VacSvc service has failed to start.
Dependencies
Volumetric Audio Compositor Service is unable to start, if the Remote Procedure Call (RPC) service is stopped or disabled.
Restore Default Startup Type for Volumetric Audio Compositor Service
Automated Restore
1. Select your Windows 11 edition and release, and then click on the Download button below.
2. Save the RestoreVolumetricAudioCompositorServiceWindows11.bat file to any folder on a local drive such as SSD or a hard disk.
3. Right-click the downloaded batch file and select Properties.
4. Check the Unblock checkbox and click OK.
5. Right-click the batch file again and select Run as administrator.
6. Restart the computer to save changes.
Note. Make sure that the vac.dll file exists in the %WinDir%\System32 folder. If this file is missing you can try to restore it from your Windows 11 installation media.