WMI Performance Adapter (wmiApSrv) Service Defaults in Windows 7

Provides performance library information from Windows Management Instrumentation (WMI) providers to clients on the network. This service only runs when Performance Data Helper is activated.

Default Settings

Startup type:Manual
Display name:WMI Performance Adapter
Service name:wmiApSrv
Service type:own
Error control:normal
Object:localSystem
Path:%SystemRoot%\system32\wbem\WmiApSrv.exe
Registry key:HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\wmiApSrv

Default Behavior

WMI Performance Adapter is a Win32 service. In Windows 7 it won't be started if the user doesn't start it. When the WMI Performance Adapter service is started, it is running as localSystem in its own process of WmiApSrv.exe. If WMI Performance Adapter fails to start, Windows 7 attempts to write the failure details into Event Log. Then Windows 7 startup should proceed and the user should be notified that the wmiApSrv service is not running because of the error.

Restore Default Startup Configuration for WMI Performance Adapter

1. Select your Windows 7 edition and service pack, and then click Download.

2. Save the Win7_wmiApSrv_Service_Startup.cmd file to a local storage device.

3. Run the saved file as an administrator.

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 7 installation media.