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  2. The LUN for a storage device is lost when multiple paths are lost concurrently in Windows

The LUN for a storage device is lost when multiple paths are lost concurrently in Windows

View products that this article applies to.

Symptoms

Assume that you configure a Windows Server 2012 R2, Windows Server 2012 or Windows Server 2008 R2-based computer to use Microsoft Multipath I/O (MPIO) and Microsoft Device Specific Module (DSM). You connect a storage device to the computer by using redundant physical paths. In this scenario, when multiple paths are lost concurrently, the logical unit number (LUN) for the storage device is lost on the computer.

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Cause

This problem occurs because, while the system tries to fail over one of the paths to the other path, the other path has also failed.

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Resolution

Hotfix information

A supported hotfix is available from Microsoft. 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, visit the following Microsoft website:
http://support.microsoft.com/contactus/?ws=support
Note 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 hotfix, you must be running one of the following operating systems:
  • Windows Server 2012 R2
  • Windows Server 2012
  • Windows Server 2008 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.

File information
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 notes
Important 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
  • The MANIFEST files (.manifest) and the MUM files (.mum) that are installed for each environment are listed separately in the "Additional file information" section. MUM, MANIFEST, 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 nameFile versionFile sizeDateTimePlatform
Mpio.sys6.3.9600.16523239,44831-Jan-201416:17x64
Windows Server 2012 file information and notes
Important Windows 8 and Windows Server 2012 hotfixes are included in the same packages. However, only "Windows 8" 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" 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.

    VersionProductMilestoneService branch
    6.2.920 0.20 xxxWindows Server 2012RTMLDR
  • The MANIFEST files (.manifest) and the MUM files (.mum) that are installed for each environment are listed separately in the "Additional file information" 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
File nameFile versionFile sizeDateTimePlatform
Mpio.sys6.2.9200.20848237,91212-Oct-201309:05x64
Windows Server 2008 R2 file information and notes
Important Windows 7 hotfixes and Windows Server 2008 R2 hotfixes are included in the same packages. However, hotfixes on the Hotfix Request page are listed under both operating systems. To request the hotfix package that applies to one or both operating systems, select the hotfix that is listed under "Windows 7/Windows Server 2008 R2" 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:
    VersionProductMilestoneService branch
    6.1.760
    1.22xxx    		Windows Server 2008 R2SP1LDR
  • 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 separately in the "Additional file information" section. MUM and MANIFEST files, and the associated security catalog (.cat) files, are critical to maintaining the state of the updated component. 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 2008 R2
File nameFile versionFile sizeDateTimePlatform
Mpio.inf_locNot applicable1,29003-Dec-201309:50Not applicable
Mpio.inf_locNot applicable1,27003-Dec-201309:52Not applicable
Mpio.inf_locNot applicable1,26603-Dec-201309:50Not applicable
Mpio.inf_locNot applicable1,25603-Dec-201309:52Not applicable
Mpio.inf_locNot applicable1,31603-Dec-201309:49Not applicable
Mpio.inf_locNot applicable1,25803-Dec-201308:42Not applicable
Mpio.inf_locNot applicable1,29603-Dec-201309:53Not applicable
Mpio.inf_locNot applicable1,25803-Dec-201309:49Not applicable
Mpio.inf_locNot applicable1,29803-Dec-201309:53Not applicable
Mpio.inf_locNot applicable1,28203-Dec-201309:49Not applicable
Mpio.inf_locNot applicable1,27803-Dec-201309:53Not applicable
Mpio.inf_locNot applicable1,25803-Dec-201309:53Not applicable
Mpio.inf_locNot applicable1,25803-Dec-201309:52Not applicable
Mpio.inf_locNot applicable1,24203-Dec-201309:53Not applicable
Mpio.inf_locNot applicable1,25803-Dec-201309:49Not applicable
Mpio.inf_locNot applicable1,28003-Dec-201309:53Not applicable
Mpio.inf_locNot applicable1,30003-Dec-201309:53Not applicable
Mpio.inf_locNot applicable1,30603-Dec-201309:52Not applicable
Mpio.inf_locNot applicable1,29203-Dec-201309:53Not applicable
Mpio.inf_locNot applicable1,26003-Dec-201309:53Not applicable
Mpio.inf_locNot applicable1,25803-Dec-201309:53Not applicable
Mpio.inf_locNot applicable1,27203-Dec-201309:52Not applicable
Mpio.inf_locNot applicable1,25803-Dec-201309:53Not applicable
Mpio.inf_locNot applicable1,23803-Dec-201309:53Not applicable
Mpio.sys6.1.7601.22529160,70403-Dec-201308:48x64
For all supported IA-64-based versions of Windows Server 2008 R2
File nameFile versionFile sizeDateTimePlatform
Mpio.inf_locNot applicable1,25603-Dec-201309:30Not applicable
Mpio.inf_locNot applicable1,25803-Dec-201307:52Not applicable
Mpio.inf_locNot applicable1,29803-Dec-201309:30Not applicable
Mpio.inf_locNot applicable1,25803-Dec-201309:27Not applicable
Mpio.inf_locNot applicable1,24203-Dec-201309:31Not applicable
Mpio.inf_locNot applicable1,25803-Dec-201309:25Not applicable
Mpio.inf_locNot applicable1,23803-Dec-201309:31Not applicable
Mpio.sys6.1.7601.22529366,52803-Dec-201307:56IA-64

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Status

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

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References

See the terminology Microsoft uses to describe software updates.

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Additional file information



Additional file information for Windows Server 2012 R2

Additional files for all supported x64-based versions of Windows Server 2012 R2
File propertyValue
File nameAmd64_mpio.inf_31bf3856ad364e35_6.3.9600.16523_none_0e311fb0631b7f33.manifest
File versionNot applicable
File size2,090
Date (UTC)31-Jan-2014
Time (UTC)16:33
PlatformNot applicable
File nameUpdate.mum
File versionNot applicable
File size1,816
Date (UTC)31-Jan-2014
Time (UTC)23:29
PlatformNot applicable

Additional file information for Windows Server 2012

Additional files for all supported x64-based versions of Windows Server 2012
File propertyValue
File nameAmd64_mpio.inf_31bf3856ad364e35_6.2.9200.20848_none_76b5693b3211ff63.manifest
File versionNot applicable
File size2,090
Date (UTC)12-Oct-2013
Time (UTC)09:52
PlatformNot applicable
File namePackage_1_for_kb2869606~31bf3856ad364e35~amd64~~6.2.2.0.mum
File versionNot applicable
File size2,066
Date (UTC)12-Oct-2013
Time (UTC)15:42
PlatformNot applicable
File namePackage_for_kb2869606_rtm~31bf3856ad364e35~amd64~~6.2.2.0.mum
File versionNot applicable
File size1,678
Date (UTC)12-Oct-2013
Time (UTC)15:42
PlatformNot applicable

Additional file information for Windows Server 2008 R2

Additional files for all supported x64-based versions of Windows Server 2008 R2
File propertyValue
File nameAmd64_0b36fe37a54285104786296afa103f21_31bf3856ad364e35_6.1.7601.22529_none_33674c22cdf64965.manifest
File versionNot applicable
File size650
Date (UTC)03-Dec-2013
Time (UTC)12:53
PlatformNot applicable
File nameAmd64_1468f3fe46af33daf3e3a7ea01b4d83e_31bf3856ad364e35_6.1.7601.22529_none_bb1ecca7fe8d64f3.manifest
File versionNot applicable
File size650
Date (UTC)03-Dec-2013
Time (UTC)12:53
PlatformNot applicable
File nameAmd64_179ac8fdc5bfd83d13f76e725234db34_31bf3856ad364e35_6.1.7601.22529_none_d1ea03861cf1f6d0.manifest
File versionNot applicable
File size650
Date (UTC)03-Dec-2013
Time (UTC)12:53
PlatformNot applicable
File nameAmd64_297ddbbf0309c5de65a3af78b44fb6c6_31bf3856ad364e35_6.1.7601.22529_none_5d46a59be750d371.manifest
File versionNot applicable
File size650
Date (UTC)03-Dec-2013
Time (UTC)12:53
PlatformNot applicable
File nameAmd64_2c2ae83adc2ac4d4bed483258bf793b5_31bf3856ad364e35_6.1.7601.22529_none_f1c75cd90df41125.manifest
File versionNot applicable
File size650
Date (UTC)03-Dec-2013
Time (UTC)12:53
PlatformNot applicable
File nameAmd64_382b9c719c3a8199cdc394ff8d3ab6f4_31bf3856ad364e35_6.1.7601.22529_none_f9d49275d6132156.manifest
File versionNot applicable
File size650
Date (UTC)03-Dec-2013
Time (UTC)12:53
PlatformNot applicable
File nameAmd64_383cfe5c1b089248c1c94b9e2d96f1e6_31bf3856ad364e35_6.1.7601.22529_none_301c6f3ed95a1913.manifest
File versionNot applicable
File size650
Date (UTC)03-Dec-2013
Time (UTC)12:53
PlatformNot applicable
File nameAmd64_3873a4ea1795ea9c19e43eb845d99575_31bf3856ad364e35_6.1.7601.22529_none_13c1ae645dc83fa3.manifest
File versionNot applicable
File size650
Date (UTC)03-Dec-2013
Time (UTC)12:53
PlatformNot applicable
File nameAmd64_3fd243ae619268f0f254af3f4d7611a2_31bf3856ad364e35_6.1.7601.22529_none_b9902a4472edb915.manifest
File versionNot applicable
File size650
Date (UTC)03-Dec-2013
Time (UTC)12:53
PlatformNot applicable
File nameAmd64_4305879256524ed9c7106f0dcee8934f_31bf3856ad364e35_6.1.7601.22529_none_3f1ecaeec88afe78.manifest
File versionNot applicable
File size650
Date (UTC)03-Dec-2013
Time (UTC)12:53
PlatformNot applicable
File nameAmd64_5ccbc03cd036c82423e5b4064fd99d83_31bf3856ad364e35_6.1.7601.22529_none_050c5260540f79c2.manifest
File versionNot applicable
File size650
Date (UTC)03-Dec-2013
Time (UTC)12:53
PlatformNot applicable
File nameAmd64_6b813440ea33ff2ec2e5e7696e2c1031_31bf3856ad364e35_6.1.7601.22529_none_e3f9b1a22bab3486.manifest
File versionNot applicable
File size650
Date (UTC)03-Dec-2013
Time (UTC)12:53
PlatformNot applicable
File nameAmd64_6fc0a8d05340479888e474677c762f0e_31bf3856ad364e35_6.1.7601.22529_none_e46667624853e4cf.manifest
File versionNot applicable
File size650
Date (UTC)03-Dec-2013
Time (UTC)12:53
PlatformNot applicable
File nameAmd64_7524c6edd50fc98b09b006122d39c824_31bf3856ad364e35_6.1.7601.22529_none_7e1d0d7ac890a6b6.manifest
File versionNot applicable
File size650
Date (UTC)03-Dec-2013
Time (UTC)12:53
PlatformNot applicable
File nameAmd64_848b481fa3380938484ffc96edf6d823_31bf3856ad364e35_6.1.7601.22529_none_00dc33c8fc22f0d8.manifest
File versionNot applicable
File size650
Date (UTC)03-Dec-2013
Time (UTC)12:53
PlatformNot applicable
File nameAmd64_85485a27bb3e823ec263fe4512afed9b_31bf3856ad364e35_6.1.7601.22529_none_6473ee8553a0c064.manifest
File versionNot applicable
File size650
Date (UTC)03-Dec-2013
Time (UTC)12:53
PlatformNot applicable
File nameAmd64_8afaffbf3a9329cf00a734358ffec934_31bf3856ad364e35_6.1.7601.22529_none_91a5a626cb9ade2d.manifest
File versionNot applicable
File size650
Date (UTC)03-Dec-2013
Time (UTC)12:53
PlatformNot applicable
File nameAmd64_92159b515c9b3eea2ef18635bfa7fc7d_31bf3856ad364e35_6.1.7601.22529_none_5b857e72ed9f2ffd.manifest
File versionNot applicable
File size650
Date (UTC)03-Dec-2013
Time (UTC)12:53
PlatformNot applicable
File nameAmd64_b4431615df1b241352ac00d708d06d0f_31bf3856ad364e35_6.1.7601.22529_none_39f46506653e5221.manifest
File versionNot applicable
File size650
Date (UTC)03-Dec-2013
Time (UTC)12:53
PlatformNot applicable
File nameAmd64_b4f29ef2891cc02034beddaf577d4c19_31bf3856ad364e35_6.1.7601.22529_none_1af81596a432bfff.manifest
File versionNot applicable
File size650
Date (UTC)03-Dec-2013
Time (UTC)12:53
PlatformNot applicable
File nameAmd64_c8a8dfd734b470f0c8cd241cff9758cc_31bf3856ad364e35_6.1.7601.22529_none_2767c6e3b2fdbfa0.manifest
File versionNot applicable
File size650
Date (UTC)03-Dec-2013
Time (UTC)12:53
PlatformNot applicable
File nameAmd64_e7fc11398e5b958f45589b076172cc35_31bf3856ad364e35_6.1.7601.22529_none_4d3ef1f5d4cde5b3.manifest
File versionNot applicable
File size650
Date (UTC)03-Dec-2013
Time (UTC)12:53
PlatformNot applicable
File nameAmd64_fb376a1ba4a377cd2ff11cda2ff920da_31bf3856ad364e35_6.1.7601.22529_none_8ef286505cf3cd38.manifest
File versionNot applicable
File size650
Date (UTC)03-Dec-2013
Time (UTC)12:53
PlatformNot applicable
File nameAmd64_fc8a53eb219d9daf9581a8b26942f0bf_31bf3856ad364e35_6.1.7601.22529_none_0ba571cec20e29d6.manifest
File versionNot applicable
File size650
Date (UTC)03-Dec-2013
Time (UTC)12:53
PlatformNot applicable
File nameAmd64_mpio.inf_31bf3856ad364e35_6.1.7601.22529_none_7bdc97adbf152097.manifest
File versionNot applicable
File size2,073
Date (UTC)03-Dec-2013
Time (UTC)09:36
PlatformNot applicable
Additional files for all supported IA-64-based versions of Windows Server 2008 R2
File propertyValue
File nameIa64_1191b42b39d01b44e09442f3fe1b2004_31bf3856ad364e35_6.1.7601.22529_none_48b0be3f195631a2.manifest
File versionNot applicable
File size648
Date (UTC)03-Dec-2013
Time (UTC)12:53
PlatformNot applicable
File nameIa64_1cad9723fe53e1a8ece5b3c7c3f07196_31bf3856ad364e35_6.1.7601.22529_none_450f2dd970592afe.manifest
File versionNot applicable
File size648
Date (UTC)03-Dec-2013
Time (UTC)12:53
PlatformNot applicable
File nameIa64_2f6b2749c67c7d450639d9347a89f011_31bf3856ad364e35_6.1.7601.22529_none_e8e70ea41d19ce74.manifest
File versionNot applicable
File size648
Date (UTC)03-Dec-2013
Time (UTC)12:53
PlatformNot applicable
File nameIa64_82d2792c921b033c0d707f237ba11a82_31bf3856ad364e35_6.1.7601.22529_none_e8de4008cece5d68.manifest
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File size648
Date (UTC)03-Dec-2013
Time (UTC)12:53
PlatformNot applicable
File nameIa64_860fd8d9796ec24ae9699def7579a815_31bf3856ad364e35_6.1.7601.22529_none_92aba558307bc102.manifest
File versionNot applicable
File size648
Date (UTC)03-Dec-2013
Time (UTC)12:53
PlatformNot applicable
File nameIa64_972c5200057d36b3a97008c48cf85b58_31bf3856ad364e35_6.1.7601.22529_none_b6b5ba51c2ac2c2d.manifest
File versionNot applicable
File size648
Date (UTC)03-Dec-2013
Time (UTC)12:53
PlatformNot applicable
File nameIa64_c95c0cb126ae1f8c6858a6cb0461976c_31bf3856ad364e35_6.1.7601.22529_none_2709e6b91236117b.manifest
File versionNot applicable
File size648
Date (UTC)03-Dec-2013
Time (UTC)12:53
PlatformNot applicable
File nameIa64_mpio.inf_31bf3856ad364e35_6.1.7601.22529_none_1fbfa02006b5b85d.manifest
File versionNot applicable
File size2,071
Date (UTC)03-Dec-2013
Time (UTC)08:27
PlatformNot applicable

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Keywords: kb, kbautohotfix, kbqfe, kbhotfixserver, kbfix, kbexpertiseinter, kbsurveynew, kbbug

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Article Info
Article ID : 2869606
Revision : 1
Created on : 1/7/2017
Published on : 3/17/2014
Exists online : False
Views : 386