This article describes an issue in which Windows Azure virtual machines (VMs) don't recover from a network outage and data corruption occurs in Windows 8.1, Windows RT 8.1, Windows Server 2012 R2, Windows Server 2012, Windows 7 Service Pack 1 (SP1), or Windows Server 2008 R2 SP1. Before you install this update, see the Prerequisites section.

Note This update isn't only restricted to Azure VMs.

Cause

This issue occurs because the SCSI synchronize cache command fails, and the command result isn't checked when VMs handle the FLUSH request.

Note VMs disks should check the result of the synchronize cache command.

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 about 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 Download the package now.

All supported x64-based versions of Windows 8.1

Download Download the package now.

All supported x64-based versions of Windows Server 2012 R2

Download Download the package now.

All supported x64-based versions of Windows Server 2012

Download Download the package now.

All supported x86-based versions of Windows 7

Download Download the package now.

All supported x64-based versions of Windows 7

Download Download the package now.

All supported x64-based versions of Windows Server 2008 R2

Download Download the package now.

All supported IA-based versions of Windows Server 2008 R2

Download Download the package now.

Note The update for Windows RT 8.1 can be got only from Windows Update.

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 8.1 or Windows Server 2012 R2. Or, install Service Pack 1 for Windows 7 or Windows Server 2008 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.

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

    6.2.920 0.17xxx

    Windows Server 2012

    RTM

    GDR

    6.2.920 0.21xxx

    Windows Server 2012

    RTM

    LDR

  • 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

File name

File version

File size

Date

Time

Platform

Disk.sys

6.2.9200.17638

101,208

20-Jan-2016

16:08

x64

Disk.sys

6.2.9200.21757

102,744

20-Jan-2016

15:41

x64


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 RT 8.1, Windows 8.1, and 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.

x86 Windows 8.1

File name

File version

File size

Date

Time

Platform

Disk.sys

6.3.9600.18203

83,800

20-Jan-2016

22:44

x86

x64 Windows 8.1 and Windows Server 2012 R2

File name

File version

File size

Date

Time

Platform

Disk.sys

6.3.9600.18203

99,672

20-Jan-2016

22:40

x64

Windows RT 8.1

File name

File version

File size

Date

Time

Platform

Disk.sys

6.3.9600.18203

75,624

20-Jan-2016

22:50

Not applicable


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

    6.1.760 1.19xxx

    Windows 7 or Windows Server 2008 R2

    SP1

    GDR

    6.1.760 1.23 xxx

    Windows 7 or Windows Server 2008 R2

    SP1

    LDR

  • 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 7 and Windows Server 2008 R2

File name

File version

File size

Date

Time

Platform

Disk.sys

6.1.7601.19133

73,664

21-Jan-2016

00:51

x64

Disk.sys

6.1.7601.23336

73,664

21-Jan-2016

00:51

x64

ia64 Windows Server 2008 R2

File name

File version

File size

Date

Time

Platform

Disk.sys

6.1.7601.19133

136,128

21-Jan-2016

00:50

IA-64

Disk.sys

6.1.7601.23336

136,128

21-Jan-2016

00:52

IA-64

x86 Windows 7

File name

File version

File size

Date

Time

Platform

Disk.sys

6.1.7601.19133

57,280

21-Jan-2016

00:51

x86

Disk.sys

6.1.7601.23336

57,280

21-Jan-2016

00:27

x86


x64 Windows Server 2012

File property

Value

File name

Amd64_disk.inf_31bf3856ad364e35_6.2.9200.17638_none_52ca28f6fdc4a40e.manifest

File version

Not applicable

File size

2,090

Date (UTC)

20-Jan-2016

Time (UTC)

16:12

Platform

Not applicable

File name

Amd64_disk.inf_31bf3856ad364e35_6.2.9200.21757_none_533d25a016f36263.manifest

File version

Not applicable

File size

2,090

Date (UTC)

20-Jan-2016

Time (UTC)

16:04

Platform

Not applicable

File name

Update.mum

File version

Not applicable

File size

1,793

Date (UTC)

20-Jan-2016

Time (UTC)

22:28

Platform

Not applicable

x86 Windows 8.1

File property

Value

File name

Update.mum

File version

Not applicable

File size

1,802

Date (UTC)

20-Jan-2016

Time (UTC)

22:51

Platform

Not applicable

File name

X86_disk.inf_31bf3856ad364e35_6.3.9600.18203_none_8ebb960b8f8655d4.manifest

File version

Not applicable

File size

2,089

Date (UTC)

20-Jan-2016

Time (UTC)

22:54

Platform

Not applicable

x64 Windows 8.1 and Windows Server 2012 R2

File property

Value

File name

Amd64_disk.inf_31bf3856ad364e35_6.3.9600.18203_none_eada318f47e3c70a.manifest

File version

Not applicable

File size

2,093

Date (UTC)

20-Jan-2016

Time (UTC)

22:58

Platform

Not applicable

File name

Update.mum

File version

Not applicable

File size

1,812

Date (UTC)

20-Jan-2016

Time (UTC)

22:51

Platform

Not applicable

Windows RT 8.1

File property

Value

File name

Arm_disk.inf_31bf3856ad364e35_6.3.9600.18203_none_8ebe08638f83749a.manifest

File version

Not applicable

File size

2,089

Date (UTC)

20-Jan-2016

Time (UTC)

22:51

Platform

Not applicable

File name

Update.mum

File version

Not applicable

File size

1,801

Date (UTC)

20-Jan-2016

Time (UTC)

22:51

Platform

Not applicable

x64 Windows 7 and Windows Server 2008 R2

File property

Value

File name

Amd64_disk.inf_31bf3856ad364e35_6.1.7601.19133_none_57d5b2098add6acc.manifest

File version

Not applicable

File size

2,073

Date (UTC)

21-Jan-2016

Time (UTC)

01:17

Platform

Not applicable

File name

Amd64_disk.inf_31bf3856ad364e35_6.1.7601.23336_none_58625198a3f853c2.manifest

File version

Not applicable

File size

2,073

Date (UTC)

21-Jan-2016

Time (UTC)

01:17

Platform

Not applicable

File name

Update.mum

File version

Not applicable

File size

1,940

Date (UTC)

21-Jan-2016

Time (UTC)

06:17

Platform

Not applicable

ia64 Windows Server 2008 R2

File property

Value

File name

Ia64_disk.inf_31bf3856ad364e35_6.1.7601.19133_none_fbb8ba7bd27e0292.manifest

File version

Not applicable

File size

2,071

Date (UTC)

21-Jan-2016

Time (UTC)

01:03

Platform

Not applicable

File name

Ia64_disk.inf_31bf3856ad364e35_6.1.7601.23336_none_fc455a0aeb98eb88.manifest

File version

Not applicable

File size

2,071

Date (UTC)

21-Jan-2016

Time (UTC)

01:04

Platform

Not applicable

File name

Update.mum

File version

Not applicable

File size

1,451

Date (UTC)

21-Jan-2016

Time (UTC)

06:17

Platform

Not applicable

x86 Windows 7

File property

Value

File name

Update.mum

File version

Not applicable

File size

1,928

Date (UTC)

21-Jan-2016

Time (UTC)

06:17

Platform

Not applicable

File name

X86_disk.inf_31bf3856ad364e35_6.1.7601.19133_none_fbb71685d27ff996.manifest

File version

Not applicable

File size

2,069

Date (UTC)

21-Jan-2016

Time (UTC)

01:15

Platform

Not applicable

File name

X86_disk.inf_31bf3856ad364e35_6.1.7601.23336_none_fc43b614eb9ae28c.manifest

File version

Not applicable

File size

2,069

Date (UTC)

21-Jan-2016

Time (UTC)

00:55

Platform

Not applicable


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