Hyper-V integration components update for Windows virtual machines

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This article describes an update for the latest integrated components for Windows virtual machines (VMs) that are running on a Windows 10-based or Windows Server 2016-based host, or a Windows Server 2012 R2-based host. This update is available on Windows Server 2012 R2, Windows Server 2012, and Windows Server 2008 R2 Service Pack 1 (SP1)-based Hyper-V guest. Before you install this update, check out the Prerequisites section.

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Issues fixed in this update

Issue 1

Consider the following scenario:

You connect a VM to a virtual switch that uses a physical adapter.
You enable the single-root I/O virtualization (SR-IOV) option in Virtual Switch Manager.
You disable the physical adapter on the Hyper-V guest while network I/O is running on the VM.

In this scenario, the VM crashes.

Issue 2

The current Write Ahead Logging (WAL) implementation incorrectly assumes that the Virtual Hard Disk (VHD) ownership never changes. However, the ownership does change in multiple VM group replication in a shared VHD scenario.

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How to get this update

You can get this update through Windows Update and the Microsoft Download Center. Even though this issue has only been observed in Windows Server 2012 R2, Windows Server 2012, or Windows Server 2008 R2 SP1, the update also applies to Windows 8.1 and Windows 7 SP1.

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 Download Center

The following files are available for download from the Microsoft Download Center.

Operating system	Update
All supported x86-based versions of Windows 8.1	Download the package now.
All supported x64-based versions of Windows 8.1	Download the package now.
All supported x64-based versions of Windows Server 2012 R2	Download the package now.
All supported x64-based versions of Windows Server 2012	Download the package now.
All supported x86-based versions of Windows 7	Download the package now.
All supported x64-based versions of Windows 7	Download the package now.
All supported x64-based versions of Windows Server 2008 R2	Download the package now.

Note This download is not self-installing. Please see Managing Hyper-V Integration Services for guidance on how to manage and install integrated components. To start the download, click the Download button.

For more information about how to download Microsoft support files, click the following article number to view the article in the Microsoft Knowledge Base:

119591 How to obtain Microsoft support files from online services

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