I/O error 0xC0000427 when you perform initial backup in Data Protection Manager to a fully deduplicated .vhdx file

Symptoms

Consider the following scenario:

  • You have a Hyper-V host on a volume that is deduplicated.

  • The deduplicated volume contains one or more virtual hard disk (.vhdx) files.

  • You perform an initial backup in Data Protection Manager to a fully deduplicated .vhdx file.


In this scenario, the .vhdx file reaches maximum fragmentation size, and I/O error 0xC0000427 occurs.

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 hotfix, you must be running Windows 8.1 or Windows Server 2012 R2.

Restart requirement

You do not have to 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 8.1 and 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 0.17 xxx

    Windows 8.1 and 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 for Windows 8.1 and 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 x86-based versions of Windows 8.1

File name

File version

File size

Date

Time

Platform

Ntfs.sys

6.3.9600.17090

1,679,704

06-Apr-2014

15:19

x86

For all supported x64-based versions of Windows 8.1 and Windows Server 2012 R2

File name

File version

File size

Date

Time

Platform

Ntfs.sys

6.3.9600.17090

2,013,016

06-Apr-2014

16:24

x64

For all supported ARM-based versions of Windows 8.1

File name

File version

File size

Date

Time

Platform

Ntfs.sys

6.3.9600.17090

1,492,832

06-Apr-2014

13:04

Not Applicable

Additional file information

Additional file information for Windows 8.1 and Windows Server 2012 R2

Additional files for all supported x86-based versions Windows 8.1

File name

Package_1_for_kb2958029~31bf3856ad364e35~x86~~6.3.1.0.mum

File version

Not Applicable

File size

1,827

Date (UTC)

07-Apr-2014

Time (UTC)

03:27

Platform

Not Applicable

File name

Package_2_for_kb2958029~31bf3856ad364e35~x86~~6.3.1.0.mum

File version

Not Applicable

File size

2,051

Date (UTC)

07-Apr-2014

Time (UTC)

03:27

Platform

Not Applicable

File name

Package_3_for_kb2958029~31bf3856ad364e35~x86~~6.3.1.0.mum

File version

Not Applicable

File size

1,827

Date (UTC)

07-Apr-2014

Time (UTC)

03:27

Platform

Not Applicable

File name

Package_for_kb2958029_rtm_gm~31bf3856ad364e35~x86~~6.3.1.0.mum

File version

Not Applicable

File size

1,957

Date (UTC)

07-Apr-2014

Time (UTC)

03:27

Platform

Not Applicable

File name

Package_for_kb2958029_rtm~31bf3856ad364e35~x86~~6.3.1.0.mum

File version

Not Applicable

File size

1,476

Date (UTC)

07-Apr-2014

Time (UTC)

03:27

Platform

Not Applicable

File name

X86_2f87f2211137cd62c3700d8d1a6b5860_31bf3856ad364e35_6.3.9600.17090_none_fd94f865f531c3fb.manifest

File version

Not Applicable

File size

692

Date (UTC)

07-Apr-2014

Time (UTC)

03:27

Platform

Not Applicable

File name

X86_microsoft-windows-ntfs_31bf3856ad364e35_6.3.9600.17090_none_3b0200b638910792.manifest

File version

Not Applicable

File size

16,005

Date (UTC)

06-Apr-2014

Time (UTC)

15:37

Platform

Not Applicable

Additional files for all supported x64-based versions of Windows 8.1 and Windows Server 2012 R2

File name

Amd64_b2979c2e2312e442aefbb6a167d78fe4_31bf3856ad364e35_6.3.9600.17090_none_e0687785ca63245f.manifest

File version

Not Applicable

File size

696

Date (UTC)

07-Apr-2014

Time (UTC)

03:36

Platform

Not Applicable

File name

Amd64_microsoft-windows-ntfs_31bf3856ad364e35_6.3.9600.17090_none_97209c39f0ee78c8.manifest

File version

Not Applicable

File size

16,011

Date (UTC)

06-Apr-2014

Time (UTC)

16:36

Platform

Not Applicable

File name

Package_1_for_kb2958029~31bf3856ad364e35~amd64~~6.3.1.0.mum

File version

Not Applicable

File size

1,837

Date (UTC)

07-Apr-2014

Time (UTC)

03:36

Platform

Not Applicable

File name

Package_2_for_kb2958029~31bf3856ad364e35~amd64~~6.3.1.0.mum

File version

Not Applicable

File size

2,289

Date (UTC)

07-Apr-2014

Time (UTC)

03:36

Platform

Not Applicable

File name

Package_3_for_kb2958029~31bf3856ad364e35~amd64~~6.3.1.0.mum

File version

Not Applicable

File size

1,837

Date (UTC)

07-Apr-2014

Time (UTC)

03:36

Platform

Not Applicable

File name

Package_for_kb2958029_rtm_gm~31bf3856ad364e35~amd64~~6.3.1.0.mum

File version

Not Applicable

File size

1,969

Date (UTC)

07-Apr-2014

Time (UTC)

03:36

Platform

Not Applicable

File name

Package_for_kb2958029_rtm~31bf3856ad364e35~amd64~~6.3.1.0.mum

File version

Not Applicable

File size

1,484

Date (UTC)

07-Apr-2014

Time (UTC)

03:36

Platform

Not Applicable

Additional files for all supported ARM-based versions of Windows 8.1

File name

Arm_2925ee75e53cf6c187c359c01e3be6d7_31bf3856ad364e35_6.3.9600.17090_none_1ba44d7394b0fc8d.manifest

File version

Not Applicable

File size

692

Date (UTC)

07-Apr-2014

Time (UTC)

03:35

Platform

Not Applicable

File name

Arm_microsoft-windows-ntfs_31bf3856ad364e35_6.3.9600.17090_none_3b04730e388e2658.manifest

File version

Not Applicable

File size

16,005

Date (UTC)

06-Apr-2014

Time (UTC)

16:20

Platform

Not Applicable

File name

Package_1_for_kb2958029~31bf3856ad364e35~arm~~6.3.1.0.mum

File version

Not Applicable

File size

1,827

Date (UTC)

07-Apr-2014

Time (UTC)

03:35

Platform

Not Applicable

File name

Package_2_for_kb2958029~31bf3856ad364e35~arm~~6.3.1.0.mum

File version

Not Applicable

File size

2,051

Date (UTC)

07-Apr-2014

Time (UTC)

03:35

Platform

Not Applicable

File name

Package_3_for_kb2958029~31bf3856ad364e35~arm~~6.3.1.0.mum

File version

Not Applicable

File size

1,827

Date (UTC)

07-Apr-2014

Time (UTC)

03:35

Platform

Not Applicable

File name

Package_for_kb2958029_rtm_gm~31bf3856ad364e35~arm~~6.3.1.0.mum

File version

Not Applicable

File size

1,957

Date (UTC)

07-Apr-2014

Time (UTC)

03:35

Platform

Not Applicable

File name

Package_for_kb2958029_rtm~31bf3856ad364e35~arm~~6.3.1.0.mum

File version

Not Applicable

File size

1,476

Date (UTC)

07-Apr-2014

Time (UTC)

03:35

Platform

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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