WMI Performance Adapter (wmiApSrv) Service Defaults in Windows 8

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

The WMI Performance Adapter service is a Win32 program that can be started by the Service Controller and that obeys the service control protocol. In Windows 8 it will not be started until the user starts it. When the WMI Performance Adapter service is started, it runs as localSystem in its own process of WmiApSrv.exe. If WMI Performance Adapter fails to start, the error details are added to Windows 8 error log. When the operating system startup is complete, the user is being notified that the wmiApSrv service hasn't been started.

Restore Default Startup Configuration for WMI Performance Adapter

1. Run the Command Prompt as an administrator.

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 %WinDir%\system32\wbem folder. If the file is corrupted or deleted, you can put it back in there.