Computer does not shut down after you remove a virtual switch in Windows Server 2012

Applies to: Windows Server 2012 DatacenterWindows Server 2012 DatacenterWindows Server 2012 Essentials

Symptoms


Consider the following scenario:

  • You install a virtual switch that is associated with a network adapter team on a Windows Server 2012-based computer.        
  • A virtual switch extension is also installed on the computer.
  • A Virtual Machine Queue (VMQ) is enabled on the network adapter team.
  • You delete the virtual switch, and then you try to shut down the computer.
In this scenario, the computer hangs, and it must be manually turned off and on to recover.

Cause


This issue occurs because Windows encounters a problem and cannot remove the VMQ from the network adapter team after you delete the virtual switch. Therefore, the computer hangs when you try to shut it down.

Resolution


This hotfix is also available at Microsoft Update Catalog.

Hotfix information

A supported hotfix is available from Microsoft. However, this hotfix is intended to correct only the problem that described in this article. Apply this hotfix only to systems that are experiencing the problem described in this article. This hotfix might receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next software update that contains this hotfix.

If the hotfix is available for download, there is a "Hotfix Download Available" section at the top of this Knowledge Base article. If this section does not appear, contact Microsoft Customer Service and Support to obtain the hotfix.

Note If additional issues occur or if any troubleshooting is required, you might have to create a separate service request. The usual support costs will apply to additional support questions and issues that do not qualify for this specific hotfix. For a complete list of Microsoft Customer Service and Support telephone numbers or to create a separate service request, visit the following Microsoft website: Note The "Hotfix Download Available" form displays the languages for which the hotfix is available. If you do not see your language, it is because a hotfix is not available for that language.

Prerequisites

To apply this hotfix, you must be running Windows Server 2012.

Registry information

To apply this hotfix, you do not have to make any changes to the registry.

Restart requirement

You must restart the computer after you apply this hotfix.

Hotfix replacement information

This hotfix does not replace a previously released hotfix.

Workaround


To work around this issue, disable the VMQ on the network adapter team.

Note Network performance might decrease after you disable the VMQ feature.

Status


Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

More Information


For more information about software update terminology, click the following article number to view the article in the Microsoft Knowledge Base:
824684 Description of the standard terminology that is used to describe Microsoft software updates

Additional file information