Windows Vista Services

PnP-X IP Bus Enumerator - Windows Vista 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 7.

Startup Type

Windows Vista edition without SP SP1 SP2
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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 as LocalSystem and runs in a shared process of svchost.exe. If PnP-X IP Bus Enumerator fails to start, the error is recorded into the Event Log. Windows Vista startup proceeds, but a message box is displayed informing you that the IPBusEnum service has failed to start. At least one service depends on PnP-X IP Bus Enumerator. Therefore I do not recommend you to disable it.


The PnP-X IP Bus Enumerator service won't start, if the following system components are stopped or disabled:

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

Restore Default Startup Type of PnP-X IP Bus Enumerator

Automated Restore

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

2. Save the RestorePnPXIPBusEnumeratorWindowsVista.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 Vista 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.