Windows 7 Services

PnP-X IP Bus Enumerator - Windows 7 Service

The PnP-X bus enumerator service manages the virtual network bus. It discovers network connected devices using the SSDP/WS discovery protocols and gives them presence in PnP. If this service is stopped or disabled, presence of NCD devices will not be maintained in PnP. All pnpx based scenarios will stop functioning.

This service also exists in Windows Vista.

Startup Type

Windows 7 edition without SP SP1
Starter Manual Manual
Home Basic Manual Manual
Home Premium Manual Manual
Professional Manual Manual
Ultimate Manual Manual
Enterprise Manual Manual

Default Properties

Display name:PnP-X IP Bus Enumerator
Service name:IPBusEnum
Path:%WinDir%\system32\svchost.exe -k LocalSystemNetworkRestricted
Error control:normal
  • SeChangeNotifyPrivilege
  • SeCreateGlobalPrivilege
  • SeImpersonatePrivilege
  • SeLoadDriverPrivilege

Default Behavior

The PnP-X IP Bus Enumerator service runs as LocalSystem in a shared process. It shares an executable file with other services. If the PnP-X IP Bus Enumerator fails to load or initialize, the error is recorded into the Event Log. Windows 7 startup should proceed, but a message box is displayed informing you that the IPBusEnum service has failed to start.


PnP-X IP Bus Enumerator will not start, if the following services are stopped or disabled:

If the PnP-X IP Bus Enumerator is stopped, the Media Center Extender Service fails to start and initialize.

Restore Default Startup Type for PnP-X IP Bus Enumerator

Automated Restore

1. Select your Windows 7 edition and Service Pack, and then click on the Download button below.

2. Save the RestorePnPXIPBusEnumeratorWindows7.bat file to any folder on your hard drive.

3. Right-click the downloaded batch file and select Run as administrator.

4. Restart the computer to save changes.

Note. Make sure that the ipbusenum.dll file exists in the %WinDir%\system32 folder. If this file is missing you can try to restore it from your Windows 7 installation media.

Yea, though I walk through the valley of the shadow of death, I will fear no evil: for thou art with me; thy rod and thy staff they comfort me.