System freezes during disk I/O in Windows

Symptoms
A computer that's running Windows 8.1, Windows Server 2012 R2, Windows 8 or Windows Server 2012 may freeze during disk I/O.
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: 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 in one of the following operating systems:
  • Windows 8.1
  • Windows Server 2012 R2
  • Windows 8
  • Windows Server 2012

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 RT 8.1, Windows 8.1 and Windows Server 2012 R2 file information notes

Important Windows 8.1 hotfixes 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:
    VersionProductMilestoneService branch
    6.3.960 0.16 xxxWindows RT 8.1, Windows 8.1 and Windows Server 2012 R2RTMGDR
For Windows RT 8.1
File nameFile versionFile sizeDateTimePlatform
Ntfs.sys6.3.9600.165191,483,62422-Jan-201407:44Not applicable
For all supported x86-based versions of Windows 8.1
File nameFile versionFile sizeDateTimePlatform
Ntfs.sys6.3.9600.165191,674,58422-Jan-201411:34x86
For all supported x64-based versions of Windows 8.1 and of Windows Server 2012 R2
File nameFile versionFile sizeDateTimePlatform
Ntfs.sys6.3.9600.165192,010,45622-Jan-201413:30x64

Windows 8 and 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 0.21 xxxWindows 8 and Windows Server 2012RTMLDR
    6.2.920 0.16 xxxWindows 8 and Windows Server 2012RTMGDR
  • The MANIFEST files (.manifest) and the MUM files (.mum) that are installed for each environment are listed separately in the "Additional file information for Windows 8 and Windows Server 2012" 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 x86-based versions of Windows 8
File nameFile versionFile sizeDateTimePlatform
Ntfs.sys6.2.9200.169311,618,26426-May-201423:17x86
Ntfs.sys6.2.9200.210551,615,70426-May-201422:57x86
For all supported x64-based versions of Windows 8 and of Windows Server 2012
File nameFile versionFile sizeDateTimePlatform
Ntfs.sys6.2.9200.169311,939,80027-May-201401:18x64
Ntfs.sys6.2.9200.210551,938,26427-May-201401:31x64
Status
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
More information

Additional file information

Additional file information for Windows RT 8.1, Windows 8.1 and Windows Server 2012 R2

Additional files for Windows RT 8.1
File propertyValue
File nameArm_589cf295bae810e4f8d924715c651b8d_31bf3856ad364e35_6.3.9600.16519_none_d5e073db9456b7dd.manifest
File versionNot applicable
File size692
Date (UTC)24-Jan-2014
Time (UTC)19:32
PlatformNot applicable
File nameArm_microsoft-windows-ntfs_31bf3856ad364e35_6.3.9600.16519_none_3b64154e38450301.manifest
File versionNot applicable
File size16,005
Date (UTC)22-Jan-2014
Time (UTC)07:53
PlatformNot applicable
File nameUpdate.mum
File versionNot applicable
File size1,834
Date (UTC)24-Jan-2014
Time (UTC)19:32
PlatformNot applicable
Additional files for all supported x86-based versions of Windows 8.1
File propertyValue
File nameUpdate.mum
File versionNot applicable
File size1,834
Date (UTC)24-Jan-2014
Time (UTC)19:32
PlatformNot applicable
File nameX86_29cc57033f5051aeb77cdaf43d0e9b27_31bf3856ad364e35_6.3.9600.16519_none_54b096990a7e928d.manifest
File versionNot applicable
File size692
Date (UTC)24-Jan-2014
Time (UTC)19:32
PlatformNot applicable
File nameX86_microsoft-windows-ntfs_31bf3856ad364e35_6.3.9600.16519_none_3b61a2f63847e43b.manifest
File versionNot applicable
File size16,005
Date (UTC)22-Jan-2014
Time (UTC)11:59
PlatformNot applicable
Additional files for all supported x64-based versions of Windows 8.1 and of Windows Server 2012 R2
File propertyValue
File nameAmd64_5e615f424bbd5b59e72ea24fe3785137_31bf3856ad364e35_6.3.9600.16519_none_c3246450055d873d.manifest
File versionNot applicable
File size696
Date (UTC)24-Jan-2014
Time (UTC)19:32
PlatformNot applicable
File nameAmd64_microsoft-windows-ntfs_31bf3856ad364e35_6.3.9600.16519_none_97803e79f0a55571.manifest
File versionNot applicable
File size16,011
Date (UTC)22-Jan-2014
Time (UTC)15:36
PlatformNot applicable
File nameUpdate.mum
File versionNot applicable
File size2,070
Date (UTC)24-Jan-2014
Time (UTC)19:32
PlatformNot applicable

Additional file information for Windows 8 and Windows Server 2012

Additional files for all supported x86-based versions of Windows 8
File propertyValue
File nameX86_046ddb3c1b8a40548f3a4592fc147c02_31bf3856ad364e35_6.2.9200.16933_none_92a96ef658fafffb.manifest
File versionNot applicable
File size692
Date (UTC)27-May-2014
Time (UTC)11:51
PlatformNot applicable
File nameX86_e09bf7d18a2e7b38d0e323406d71808e_31bf3856ad364e35_6.2.9200.21057_none_7ce73e97d07c1a6b.manifest
File versionNot applicable
File size692
Date (UTC)27-May-2014
Time (UTC)11:51
PlatformNot applicable
File nameX86_microsoft-windows-ntfs_31bf3856ad364e35_6.2.9200.16933_none_a3515053ee2aa832.manifest
File versionNot applicable
File size15,737
Date (UTC)26-May-2014
Time (UTC)23:27
PlatformNot applicable
File nameX86_microsoft-windows-ntfs_31bf3856ad364e35_6.2.9200.21057_none_a3c924ab07551b55.manifest
File versionNot applicable
File size15,737
Date (UTC)26-May-2014
Time (UTC)23:19
PlatformNot applicable
Additional files for all supported x64-based versions of Windows 8 and Windows Server 2012
File propertyValue
File nameAmd64_835b37dfc556fba57d64e15fc98f8158_31bf3856ad364e35_6.2.9200.21057_none_8bdb20605b32ebc8.manifest
File versionNot applicable
File size696
Date (UTC)27-May-2014
Time (UTC)13:17
PlatformNot applicable
File nameAmd64_fcbf3c1d62dfa12b8a879c8277cea085_31bf3856ad364e35_6.2.9200.16933_none_fa836bdb1159b5c2.manifest
File versionNot applicable
File size696
Date (UTC)27-May-2014
Time (UTC)13:17
PlatformNot applicable
File nameAmd64_microsoft-windows-ntfs_31bf3856ad364e35_6.2.9200.16933_none_ff6febd7a6881968.manifest
File versionNot applicable
File size15,743
Date (UTC)27-May-2014
Time (UTC)01:28
PlatformNot applicable
File nameAmd64_microsoft-windows-ntfs_31bf3856ad364e35_6.2.9200.21057_none_ffe7c02ebfb28c8b.manifest
File versionNot applicable
File size15,743
Date (UTC)27-May-2014
Time (UTC)01:38
PlatformNot applicable
References
Learn about the terminology that Microsoft uses to describe software updates.

Third-party information disclaimer

The third-party products that this article discusses are manufactured by companies that are independent of Microsoft. Microsoft makes no warranty, implied or otherwise, about the performance or reliability of these products.
Properties

Article ID: 2904100 - Last Review: 02/09/2016 15:15:00 - Revision: 7.0

Windows 8.1 Enterprise, Windows RT 8.1, Windows 8.1, Windows 8.1 Pro, Windows Server 2012 R2 Datacenter, Windows Server 2012 R2 Essentials, Windows Server 2012 R2 Foundation, Windows Server 2012 R2 Standard, Windows 8, Windows 8 Enterprise, Windows 8 Pro, Windows Server 2012 Datacenter, Windows Server 2012 Essentials, Windows Server 2012 Foundation, Windows Server 2012 Standard

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