A restarted virtual machine loses connectivity after you set the "Private VLAN (PVLAN) networks" option in a Windows Server 2012 R2 environment

Symptoms

Consider the following scenario:

  • You have a host server that's running Windows Server 2012 R2 with the Hyper-V role installed.

  • You create two virtual machines on the host server, and you connect them to the same virtual switch.

  • You configure the Private VLAN (PVLAN) networks option for these two virtual machines.

  • You restart one of the virtual machines.


In this scenario, the restarted virtual machine loses connectivity after it restarts.

Resolution

Hotfix information

A supported hotfix is available from Microsoft Support. However, this hotfix is intended to correct only the problem that is 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, go to the following Microsoft website:

http://support.microsoft.com/contactus/?ws=supportNote 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 update, you must first have update 2919355 installed in Windows Server 2012 R2.

Restart requirement

You must restart the computer after you apply this hotfix.

Hotfix replacement information

This hotfix does not replace any previously released hotfix.

The English (United States) version of this hotfix installs files that have the attributes that are listed in the following tables. The dates and the times for these files are listed in Coordinated Universal Time (UTC). The dates and the times for these files on your local computer are displayed in your local time together with your current daylight saving time (DST) bias. Additionally, the dates and the times may change when you perform certain operations on the files.

Windows Server 2012 R2 file information and notesImportant Windows 8.1 and Windows Server 2012 R2 hotfixes are included in the same packages. However, only "Windows 8.1" is listed on the Hotfix Request page. To request the hotfix package that applies to one or both operating systems, select the hotfix that is listed under "Windows 8.1" on the page. Always refer to the "Applies To" section in articles to determine the actual operating system that each hotfix applies to.

  • 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 0.16 xxx

    Windows Server 2012 R2

    RTM

    GDR

    6.3.960 0.17 xxx

    Windows Server 2012 R2

    RTM

    DR

  • The MANIFEST files (.manifest) and the MUM files (.mum) that are installed for each environment are listed separately┬áin the "Additional file information for Windows Server 2012 R2" section. MUM and MANIFEST files, and the associated security catalog (.cat) files, are extremely 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.

For all supported x64-based versions of Windows Server 2012 R2

File name

File version

File size

Date

Time

Platform

Vmsif.dll

6.3.9600.17136

62,464

27-May-2014

10:23

x64

Vmsnetsetupplugin.dll

6.3.9600.16384

33,792

22-Aug-2013

09:52

x64

Vmswitch.sys

6.3.9600.17236

690,688

15-Jul-2014

10:30

x64

Vmsif.dll

6.3.9600.17136

62,464

27-May-2014

10:23

x64

Vmsntfy.dll

6.3.9600.16384

88,576

22-Aug-2013

10:49

x64

Vmswitch.sys

6.3.9600.17236

690,688

15-Jul-2014

10:30

x64

Mslbfoprovider.sys

6.3.9600.17236

115,712

15-Jul-2014

10:33

x64

Wnv.sys

6.3.9600.17136

705,536

27-May-2014

13:15

x64

Wnvapi.dll

6.3.9600.16384

61,952

22-Aug-2013

09:53

x64

Vmsif.dll

6.3.9600.17136

62,464

27-May-2014

10:23

x64

Vmsntfy.dll

6.3.9600.16384

88,576

22-Aug-2013

10:49

x64

Vmswitch.sys

6.3.9600.17236

690,688

15-Jul-2014

10:30

x64

Vmsif.dll

6.3.9600.17136

62,464

27-May-2014

10:23

x64

Vmsntfy.dll

6.3.9600.16384

88,576

22-Aug-2013

10:49

x64

Vmswitch.sys

6.3.9600.17236

690,688

15-Jul-2014

10:30

x64

Additional file information for Windows Server 2012 R2

Additional files for all supported x64-based versions of Windows Server 2012 R2

File name

Amd64_52d54ab5daf7e9391c951d06dd1da389_31bf3856ad364e35_6.3.9600.17236_none_52f86ad8b39a30db.manifest

File version

Not Applicable

File size

725

Date (UTC)

16-Jul-2014

Time (UTC)

03:07

SHA-1 hash

Not Applicable

MD5 hash

Not Applicable

File name

Amd64_88b38a33324b926a4a5c99392f83b077_31bf3856ad364e35_6.3.9600.17236_none_978b3b378cbaf003.manifest

File version

Not Applicable

File size

695

Date (UTC)

16-Jul-2014

Time (UTC)

03:07

SHA-1 hash

Not Applicable

MD5 hash

Not Applicable

File name

Amd64_97caf674228cec6e71c3cf0ce363415e_31bf3856ad364e35_6.3.9600.17236_none_f52f53ea53157c1b.manifest

File version

Not Applicable

File size

701

Date (UTC)

16-Jul-2014

Time (UTC)

03:07

SHA-1 hash

Not Applicable

MD5 hash

Not Applicable

File name

Amd64_f9c2e55fab83a828714877d72840680e_31bf3856ad364e35_6.3.9600.17236_none_094dd92ba1be2e64.manifest

File version

Not Applicable

File size

708

Date (UTC)

16-Jul-2014

Time (UTC)

03:07

SHA-1 hash

Not Applicable

MD5 hash

Not Applicable

File name

Amd64_microsoft-hyper-v-d..ch-coresystem-state_31bf3856ad364e35_6.3.9600.17236_none_e88c199e4365e527.manifest

File version

Not Applicable

File size

10,075

Date (UTC)

16-Jul-2014

Time (UTC)

03:07

SHA-1 hash

Not Applicable

MD5 hash

Not Applicable

File name

Amd64_microsoft-hyper-v-drivers-vmswitch_31bf3856ad364e35_6.3.9600.17236_none_5a01911053e9b258.manifest

File version

Not Applicable

File size

7,637

Date (UTC)

16-Jul-2014

Time (UTC)

03:07

SHA-1 hash

Not Applicable

MD5 hash

Not Applicable

File name

Amd64_microsoft-windows-ndis-lbfo_31bf3856ad364e35_6.3.9600.17236_none_025a5831ea9d9fdf.manifest

File version

Not Applicable

File size

21,645

Date (UTC)

15-Jul-2014

Time (UTC)

19:38

SHA-1 hash

Not Applicable

MD5 hash

Not Applicable

File name

Amd64_microsoft-windows-wnv_31bf3856ad364e35_6.3.9600.17236_none_a09c6e2b2a90f7c8.manifest

File version

Not Applicable

File size

54,090

Date (UTC)

16-Jul-2014

Time (UTC)

03:07

SHA-1 hash

Not Applicable

MD5 hash

Not Applicable

File name

Amd64_wvms_pp.inf_31bf3856ad364e35_6.3.9600.17236_none_53dbeaeac52f2b4c.manifest

File version

Not Applicable

File size

3,379

Date (UTC)

16-Jul-2014

Time (UTC)

03:07

SHA-1 hash

Not Applicable

MD5 hash

Not Applicable

File name

Amd64_wvms_pp_coresys.inf_31bf3856ad364e35_6.3.9600.17236_none_6259fe2d601e3b7b.manifest

File version

Not Applicable

File size

3,411

Date (UTC)

16-Jul-2014

Time (UTC)

03:07

SHA-1 hash

Not Applicable

MD5 hash

Not Applicable

File name

Package_1_for_kb2982439~31bf3856ad364e35~amd64~~6.3.1.0.mum

File version

Not Applicable

File size

2,304

Date (UTC)

16-Jul-2014

Time (UTC)

03:07

SHA-1 hash

Not Applicable

MD5 hash

Not Applicable

File name

Package_2_for_kb2982439~31bf3856ad364e35~amd64~~6.3.1.0.mum

File version

Not Applicable

File size

1,908

Date (UTC)

16-Jul-2014

Time (UTC)

03:07

SHA-1 hash

Not Applicable

MD5 hash

Not Applicable

File name

Package_3_for_kb2982439~31bf3856ad364e35~amd64~~6.3.1.0.mum

File version

Not Applicable

File size

2,004

Date (UTC)

16-Jul-2014

Time (UTC)

03:07

SHA-1 hash

Not Applicable

MD5 hash

Not Applicable

File name

Package_4_for_kb2982439~31bf3856ad364e35~amd64~~6.3.1.0.mum

File version

Not Applicable

File size

1,873

Date (UTC)

16-Jul-2014

Time (UTC)

03:07

SHA-1 hash

Not Applicable

MD5 hash

Not Applicable

File name

Package_5_for_kb2982439~31bf3856ad364e35~amd64~~6.3.1.0.mum

File version

Not Applicable

File size

1,847

Date (UTC)

16-Jul-2014

Time (UTC)

03:07

SHA-1 hash

Not Applicable

MD5 hash

Not Applicable

File name

Package_6_for_kb2982439~31bf3856ad364e35~amd64~~6.3.1.0.mum

File version

Not Applicable

File size

2,074

Date (UTC)

16-Jul-2014

Time (UTC)

03:07

SHA-1 hash

Not Applicable

MD5 hash

Not Applicable

File name

Package_for_kb2982439_rtm_gm~31bf3856ad364e35~amd64~~6.3.1.0.mum

File version

Not Applicable

File size

2,806

Date (UTC)

16-Jul-2014

Time (UTC)

03:07

SHA-1 hash

Not Applicable

MD5 hash

Not Applicable

File name

Package_for_kb2982439_rtm~31bf3856ad364e35~amd64~~6.3.1.0.mum

File version

Not Applicable

File size

3,471

Date (UTC)

16-Jul-2014

Time (UTC)

03:07

SHA-1 hash

Not Applicable

MD5 hash

Not Applicable


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.

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