Cluster nodes or VMs go offline when they are using VMQ capable NICs on a Windows Server 2012 R2 host

This article describes an issue in which all virtual machines (VM) go into failed state on a Windows Server 2012 R2 host and may not be migrated automatically to other cluster nodes. An update is available to fix this issue. Before you install this update, see the Prerequisites section.

Symptoms

This issue occurs when Hyper-V cluster hosts use virtual machine queue (VMQ) capable NICs (high performance NICs) and when the VMQ feature is enabled. All VMs on the hosts would go into failed state instead of failing over to other nodes.

How to get this update

Important If you install a language pack after you install this update, you must reinstall this update. Therefore, we recommend that you install any language packs that you need before you install this update. For more information, see Add language packs to Windows.

Method 1: Windows Update

This update is provided as a Recommended update on Windows Update. For more information on how to run Windows Update, see How to get an update through Windows Update.

Method 2: Microsoft Update Catalog

To get the stand-alone package for this update, go to the Microsoft Update Catalog website.

Update detail information

Prerequisites

To install this update, you should first install April 2014, update rollup for Windows RT 8.1, Windows 8.1, and Windows Server 2012 R2 (2919355) in Windows Server 2012 R2.

Registry information

To apply this update, you don't have to make any changes to the registry.

Restart requirement

You may have to restart the computer after you apply this update.

Update replacement information

This update doesn't replace a previously released update.

Status

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

References

Learn about the terminology that Microsoft uses to describe software updates.



Third-party information disclaimer

File Information

The English (United States) version of this software update installs files that have the attributes that are listed in the following tables.
Windows Server 2012 R2
Additional file information
Thuộc tính

ID Bài viết: 3145432 - Xem lại Lần cuối: 10-05-2016 - Bản sửa đổi: 1

Phản hồi