Windows Azure VMs don't recover from a network outage and data corruption issues occur

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 systemUpdate
All supported x86-based versions of Windows 8.1DownloadDownload the package now.
All supported x64-based versions of Windows 8.1 DownloadDownload the package now.
All supported x64-based versions of Windows Server 2012 R2DownloadDownload the package now.
All supported x64-based versions of Windows Server 2012 DownloadDownload the package now.
All supported x86-based versions of Windows 7DownloadDownload the package now.
All supported x64-based versions of Windows 7DownloadDownload the package now.
All supported x64-based versions of Windows Server 2008 R2DownloadDownload the package now.
All supported IA-based versions of Windows Server 2008 R2DownloadDownload 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.

Windows Server 2012

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 0.17xxxWindows Server 2012RTMGDR
    6.2.920 0.21xxxWindows Server 2012RTMLDR
  • 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 nameFile versionFile sizeDateTimePlatform
Disk.sys6.2.9200.17638101,20820-Jan-201616:08x64
Disk.sys6.2.9200.21757102,74420-Jan-201615:41x64

Windows 8.1, Windows RT 8.1 and Windows Server 2012 R2

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:
    VersionProductMilestoneService branch
    6.3.960 0.18 xxxWindows RT 8.1, Windows 8.1, and Windows Server 2012 R2RTMGDR
  • 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 nameFile versionFile sizeDateTimePlatform
Disk.sys6.3.9600.1820383,80020-Jan-201622:44x86
x64 Windows 8.1 and Windows Server 2012 R2
File nameFile versionFile sizeDateTimePlatform
Disk.sys6.3.9600.1820399,67220-Jan-201622:40x64
Windows RT 8.1
File nameFile versionFile sizeDateTimePlatform
Disk.sys6.3.9600.1820375,62420-Jan-201622:50Not applicable

Windows 7 and Windows Server 2008 R2

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 1.19xxxWindows 7 or Windows Server 2008 R2 SP1GDR
    6.1.760 1.23 xxxWindows 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 nameFile versionFile sizeDateTimePlatform
Disk.sys6.1.7601.1913373,66421-Jan-201600:51x64
Disk.sys6.1.7601.2333673,66421-Jan-201600:51x64
ia64 Windows Server 2008 R2
File nameFile versionFile sizeDateTimePlatform
Disk.sys6.1.7601.19133136,12821-Jan-201600:50IA-64
Disk.sys6.1.7601.23336136,12821-Jan-201600:52IA-64
x86 Windows 7
File nameFile versionFile sizeDateTimePlatform
Disk.sys6.1.7601.1913357,28021-Jan-201600:51x86
Disk.sys6.1.7601.2333657,28021-Jan-201600:27x86

Additional file information

x64 Windows Server 2012
File propertyValue
File nameAmd64_disk.inf_31bf3856ad364e35_6.2.9200.17638_none_52ca28f6fdc4a40e.manifest
File versionNot applicable
File size2,090
Date (UTC)20-Jan-2016
Time (UTC)16:12
PlatformNot applicable
File nameAmd64_disk.inf_31bf3856ad364e35_6.2.9200.21757_none_533d25a016f36263.manifest
File versionNot applicable
File size2,090
Date (UTC)20-Jan-2016
Time (UTC)16:04
PlatformNot applicable
File nameUpdate.mum
File versionNot applicable
File size1,793
Date (UTC)20-Jan-2016
Time (UTC)22:28
PlatformNot applicable
x86 Windows 8.1
File propertyValue
File nameUpdate.mum
File versionNot applicable
File size1,802
Date (UTC)20-Jan-2016
Time (UTC)22:51
PlatformNot applicable
File nameX86_disk.inf_31bf3856ad364e35_6.3.9600.18203_none_8ebb960b8f8655d4.manifest
File versionNot applicable
File size2,089
Date (UTC)20-Jan-2016
Time (UTC)22:54
PlatformNot applicable
x64 Windows 8.1 and Windows Server 2012 R2
File propertyValue
File nameAmd64_disk.inf_31bf3856ad364e35_6.3.9600.18203_none_eada318f47e3c70a.manifest
File versionNot applicable
File size2,093
Date (UTC)20-Jan-2016
Time (UTC)22:58
PlatformNot applicable
File nameUpdate.mum
File versionNot applicable
File size1,812
Date (UTC)20-Jan-2016
Time (UTC)22:51
PlatformNot applicable
Windows RT 8.1
File propertyValue
File nameArm_disk.inf_31bf3856ad364e35_6.3.9600.18203_none_8ebe08638f83749a.manifest
File versionNot applicable
File size2,089
Date (UTC)20-Jan-2016
Time (UTC)22:51
PlatformNot applicable
File nameUpdate.mum
File versionNot applicable
File size1,801
Date (UTC)20-Jan-2016
Time (UTC)22:51
PlatformNot applicable
x64 Windows 7 and Windows Server 2008 R2
File propertyValue
File nameAmd64_disk.inf_31bf3856ad364e35_6.1.7601.19133_none_57d5b2098add6acc.manifest
File versionNot applicable
File size2,073
Date (UTC)21-Jan-2016
Time (UTC)01:17
PlatformNot applicable
File nameAmd64_disk.inf_31bf3856ad364e35_6.1.7601.23336_none_58625198a3f853c2.manifest
File versionNot applicable
File size2,073
Date (UTC)21-Jan-2016
Time (UTC)01:17
PlatformNot applicable
File nameUpdate.mum
File versionNot applicable
File size1,940
Date (UTC)21-Jan-2016
Time (UTC)06:17
PlatformNot applicable
ia64 Windows Server 2008 R2
File propertyValue
File nameIa64_disk.inf_31bf3856ad364e35_6.1.7601.19133_none_fbb8ba7bd27e0292.manifest
File versionNot applicable
File size2,071
Date (UTC)21-Jan-2016
Time (UTC)01:03
PlatformNot applicable
File nameIa64_disk.inf_31bf3856ad364e35_6.1.7601.23336_none_fc455a0aeb98eb88.manifest
File versionNot applicable
File size2,071
Date (UTC)21-Jan-2016
Time (UTC)01:04
PlatformNot applicable
File nameUpdate.mum
File versionNot applicable
File size1,451
Date (UTC)21-Jan-2016
Time (UTC)06:17
PlatformNot applicable
x86 Windows 7
File propertyValue
File nameUpdate.mum
File versionNot applicable
File size1,928
Date (UTC)21-Jan-2016
Time (UTC)06:17
PlatformNot applicable
File nameX86_disk.inf_31bf3856ad364e35_6.1.7601.19133_none_fbb71685d27ff996.manifest
File versionNot applicable
File size2,069
Date (UTC)21-Jan-2016
Time (UTC)01:15
PlatformNot applicable
File nameX86_disk.inf_31bf3856ad364e35_6.1.7601.23336_none_fc43b614eb9ae28c.manifest
File versionNot applicable
File size2,069
Date (UTC)21-Jan-2016
Time (UTC)00:55
PlatformNot applicable
Properties

Article ID: 3137061 - Last Review: 04/22/2016 07:29:00 - Revision: 8.0

Windows Server 2012 R2 Datacenter, Windows Server 2012 R2 Standard, Windows Server 2012 R2 Essentials, Windows Server 2012 R2 Foundation, Windows 8.1 Enterprise, Windows 8.1 Pro, Windows 8.1, Windows RT 8.1, Windows Server 2012 Datacenter, Windows Server 2012 Standard, Windows Server 2012 Essentials, Windows Server 2012 Foundation, Windows Server 2008 R2 Service Pack 1, Windows 7 Service Pack 1

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