Event ID 12441 — NVSPWMI service

Applies To: Windows Server 2008

This is preliminary documentation and subject to change.

This service provides the WMI interface for managing virtual network switches.

Event Details

Product:	Windows Operating System
ID:	12441
Source:	Microsoft-Windows-Hyper-V-Worker
Version:	6.0
Symbolic Name:	MSENET_OPEN_ERROR_SUMMARY
Message:	Error '%4' (%5) while opening file '%3' during ethernet device startup. The Hyper-V Networking Management service provider may not be installed.

Restart the Network Virtual Service Provider Windows Management Instrumentation (nvspwmi) service and then restart the virtual machine.

To restart NVSPWMI using the Service Manager:

1. In the Hyper-V Manager click the server on which you want to stop the service, then click Action, then click Stop Service.

2. Click Action, and then click Start Service.

To restart NVSPWMI using PowerShell:

1. On the computer that has the stopped service, open a command prompt as local administrator and type the following:

C:\PS>restart-service nvspwmi

To restart the NVSPWMI service using the command prompt:

1. On the computer that has the stopped service, open a command prompt as local administrator and type the following:

net stop nvspwmi

If the service is not running, you will see the error "The Hyper-V Networking Management service is not started."

2. On the command prompt type the following command to start the VMMS service

net start nvspwmi

If the service start starts you will see the message "The Hyper-V Virtual Networking Management service was start successfully."

The nvspwmi service is displayed as running in the service control manager and the user is able to create and manage virtual switches.