About this update

This article describes an update that adds Discrete Device Assignment (DDA) support to Windows Server 2012 R2-based guest virtual machines (VMs). The update is targeted towards those VMs that are running on Azure's N-Series GPU-based VMs or on-premises deployments of a later version of Windows Server 2012 R2. 

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 Download Center

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

Operating system

Update

All supported x64-based versions of Windows Server 2012 R2

Download Download the package now.

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

119591 How to obtain Microsoft support files from online services Microsoft scanned this file for viruses. Microsoft used the most current virus-detection software that was available on the date that the file was posted. The file is stored on security-enhanced servers that help prevent any unauthorized changes to the file.

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.

References

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

File Information

The English (United States) version of this software update installs files that have the attributes that are listed in the following tables.

Notes

  • The files that apply to a specific product, milestone (RTM, SPn), and service branch (LDR, GDR) can be identified by examining the file version numbers as shown in the following table:

    Version

    Product

    Milestone

    Service branch

    6.3.960 0.18 xxx

    Windows Server 2012 R2

    RTM

    GDR

  • GDR service branches contain only those fixes that are widely released to address widespread, critical issues. LDR service branches contain hotfixes in addition to widely released fixes.

  • The MANIFEST files (.manifest) and the MUM files (.mum) that are installed for each environment are listed in the "Additional file information" section. MUM, MANIFEST, and the associated security catalog (.cat) files, are very important to maintain the state of the updated components. The security catalog files, for which the attributes are not listed, are signed with a Microsoft digital signature.

x64 Windows Server 2012 R2

File name

File version

File size

Date

Time

Platform

SP requirement

Service branch

Vpci.sys

6.3.9600.18219

72,024

26-Jan-2016

19:15

x64

None

Not applicable

Vpcivsp.sys

6.3.9600.18219

65,536

26-Jan-2016

14:48

x64

SP.

AMD64_WVPCIVSP

Vpcivsp.sys

6.3.9600.18219

65,536

26-Jan-2016

14:48

x64

SP_

AMD64_WVPCIVSP

x64 Windows Server 2012 R2

File property

Value

File name

Amd64_wvpci.inf_31bf3856ad364e35_6.3.9600.18219_none_6e65b6b5b8a47d85.manifest

File version

Not applicable

File size

1,752

Date (UTC)

26-Jan-2016

Time (UTC)

19:21

Platform

Not applicable

File name

Amd64_wvpcivsp.inf_31bf3856ad364e35_6.3.9600.18219_none_6fd0ad9bb353ca78.manifest

File version

Not applicable

File size

2,118

Date (UTC)

26-Jan-2016

Time (UTC)

15:32

Platform

Not applicable

File name

Amd64_wvpcivsp_coresys.inf_31bf3856ad364e35_6.3.9600.18219_none_15b922e5c3f03741.manifest

File version

Not applicable

File size

2,150

Date (UTC)

26-Jan-2016

Time (UTC)

15:32

Platform

Not applicable

File name

Update.mum

File version

Not applicable

File size

2,078

Date (UTC)

26-Jan-2016

Time (UTC)

19:21

Platform

Not applicable

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