WMI Performance Adapter (WmiApSrv) Service Defaults in Windows XP

Provides performance library information from WMI HiPerf providers.

Default Settings

Startup type:Manual
Display name:WMI Performance Adapter
Service name:WmiApSrv
Service type:own
Error control:normal
Registry key:HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\WmiApSrv

Default Behavior

WMI Performance Adapter is a Win32 service. In Windows XP it won't start until the current user starts it. When the WMI Performance Adapter service is started, it is running as LocalSystem in its own process of wmiapsrv.exe. If the WMI Performance Adapter 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 WmiApSrv service has failed to start.


WMI Performance Adapter depends on the Remote Procedure Call (RPC) service.

Restore Default Startup Configuration for WMI Performance Adapter

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

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

3. Run the saved file.

4. Restart the computer.

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