Microsoft UAA Bus Driver for High Definition Audio - Windows 11 Service
This service also exists in Windows 10, 7, 8 and Vista.
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 | Manual | Manual | Manual | Manual |
Default Properties
| Display name: | Microsoft UAA Bus Driver for High Definition Audio |
| Service name: | HDAudBus |
| Type: | kernel |
| Path: | %WinDir%\System32\drivers\HDAudBus.sys |
| Error control: | normal |
| Group: | Extended Base |
Default Behavior
The Microsoft UAA Bus Driver for High Definition Audio service is a kernel mode driver. If Microsoft UAA Bus Driver for High Definition Audio fails to start, the error is logged. Windows 11 startup proceeds, but a message box is displayed informing you that the HDAudBus service has failed to start.
Restore Default Startup Type for Microsoft UAA Bus Driver for High Definition Audio
Automated Restore
1. Select your Windows 11 edition and release, and then click on the Download button below.
2. Save the RestoreMicrosoftUAABusDriverforHighDefinitionAudioWindows11.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 HDAudBus.sys file exists in the %WinDir%\System32\drivers folder. If this file is missing you can try to restore it from your Windows 11 installation media.