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 of WMI Performance Adapter

Before you begin doing this, make sure that all the services on which WMI Performance Adapter depends are configured by default and function properly. See the list of dependencies above.

1. Run the Command Prompt.

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

sc config WmiApSrv start= demand

3. Close the command window and restart the computer.

The WmiApSrv service is using the wmiapsrv.exe file that is located in the C:\Windows\system32\wbem directory. If the file is removed or corrupted, read this article to restore its original version from Windows XP installation media.