Event ID 14112 — Virtual Switch availability

Applies To: Windows Server 2008

This is preliminary documentation and subject to change.

This aspect refers to events pertaining to the availability of virtual switches.

Event Details

Resolve

Restart nvspwmi service

Network Virtual Service Provider Windows Management Instrumentation (NVSPWMI) is used to control virtual network resources such as virtual switches, switch ports and internal Ethernet ports. Check the environment in which the nvspwmi service failed, including the event log (for prior error logs that led to this failure). Then, restart the nvspwmi service.

Note:  The nvspwmi service does not manage network adapters (NICs) of virtual machines. NICs are resources of virtual machines, managed by the Virtual Management Service (VMMS).

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."

Verify

The user is able to succesfully create and manage virtual switches through the user interface (UI) as well as through the WMI interface.

Related Management Information

Virtual Switch availability

Hyper-V