Microsoft Kernel Acoustic Echo Canceller (aec) Service Defaults in Windows XP

Microsoft Acoustic Echo Canceller by Microsoft Corporation.

Default Settings

Startup type:Manual
Display name:Microsoft Kernel Acoustic Echo Canceller
Service name:aec
Service type:kernel
Error control:normal
Path:%SystemRoot%\system32\drivers\aec.sys
Registry key:HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\aec

Default Behavior

Microsoft Kernel Acoustic Echo Canceller is a kernel device driver. In Windows XP it won't start until the current user starts it. If the Microsoft Kernel Acoustic Echo Canceller 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 aec service has failed to start.

Restore Default Startup Configuration for Microsoft Kernel Acoustic Echo Canceller

1. Run the Command Prompt.

2. Copy the command below, paste it into the command window and press ENTER:

sc config aec start= demand

3. Close the command window and restart the computer.

The aec service is using the aec.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.