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
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 of 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 C:\Windows\system32\wbem directory. If the file is removed or corrupted, read this article to restore its original version from Windows 7 installation media.