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Microsoft 1.1 UAA Function Driver for High Definition Audio Service - Windows 10 Service

High Definition Audio Function Driver by Microsoft Corporation.

This service exists in Windows 10 only.

Startup Type

Windows 10 version Home Pro Education Enterprise
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Default Properties

Display name:Microsoft 1.1 UAA Function Driver for High Definition Audio Service
Service name:HdAudAddService
Type:kernel
Path:%WinDir%\System32\drivers\HdAudio.sys
Error control:normal

Default Behavior

The Microsoft 1.1 UAA Function Driver for High Definition Audio Service is a kernel mode driver. If Microsoft 1.1 UAA Function Driver for High Definition Audio Service fails to start, the error is logged. Windows 10 startup proceeds, but a message box is displayed informing you that the HdAudAddService service has failed to start.

Restore Default Startup Type for Microsoft 1.1 UAA Function Driver for High Definition Audio Service

Automated Restore

1. Select your Windows 10 edition, and then click on the Download button below.

2. Save the RestoreMicrosoft11UAAFunctionDriverforHighDefinitionAudioServiceWindows10.bat file to any folder on your hard drive.

3. Right-click the downloaded batch file and select Run as administrator.

4. Restart the computer to save changes.

Note. Make sure that the HdAudio.sys file exists in the %WinDir%\System32\drivers folder. If this file is missing you can try to restore it from your Windows 10 installation media.