Microsoft WINMM WDM Audio Compatibility Driver (wdmaud) Service Defaults in Windows XP

MMSYSTEM Wave/Midi API mapper by Microsoft Corporation.

Default Settings

Startup type:Manual
Display name:Microsoft WINMM WDM Audio Compatibility Driver
Service name:wdmaud
Service type:kernel
Error control:normal
Path:%SystemRoot%\system32\drivers\wdmaud.sys
Registry key:HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\wdmaud

Default Behavior

Microsoft WINMM WDM Audio Compatibility Driver is a kernel device driver. In Windows XP it won't start until the current user starts it. If the Microsoft WINMM WDM Audio Compatibility Driver fails to start, the technical information about the error is added to the Event Log. Windows XP startup should proceed, but a message box should be displayed informing the user that the wdmaud service has failed to start.

Restore Default Startup Configuration for Microsoft WINMM WDM Audio Compatibility Driver

1. Select your Windows XP edition and service pack, and then click Download.

2. Save the WinXP_wdmaud_Service_Startup.cmd file to a local storage device.

3. Run the saved file.

4. Restart the computer.

The wdmaud service is using the wdmaud.sys file that is located in the %WinDir%\system32\drivers folder. If the file is changed, damaged or deleted, you can restore its original version from Windows XP installation media.