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Not sure if this is the right fix? We've added this issue to our memory dump diagnostic which can confirm.

Symptoms

Assume that you perform a backup operation on a Windows Server 2008 R2-based computer that has the Distributed File System (DFS) Replication service installed. However, the DFS Replication service crashes.

Cause

This issue occurs because an access violation occurs when the DFS Replication Volume Shadow Copy Service (VSS) writer tries to access data.

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=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 one of the following operating systems:

  • Windows Server 2008 R2

  • Windows Server 2008 R2 Service Pack 1 (SP1)

For more information about how to obtain a Windows 7 or Windows Server 2008 R2 service pack, click the following article number to view the article in the Microsoft Knowledge Base:

976932 Information about Service Pack 1 for Windows 7 and for Windows Server 2008 R2

Registry information

To apply the hotfix in this package, you do not have to make any changes to the registry.

Restart requirement

You must restart the computer after you apply this hotfix.

Hotfix replacement information

This hotfix does not replace a previously released hotfix.

File information

The global 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 2008 R2 file information 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, SR_Level (RTM, SPn), and service branch (LDR, GDR) can be identified by examining the file version numbers as shown in the following table.

    Version

    Product

    SR_Level

    Service branch

    6.1.760
    0.
    16xxx

    Windows Server 2008 R2

    RTM

    GDR

    6.1.760
    0.
    21xxx

    Windows Server 2008 R2

    RTM

    LDR

    6.1.760
    1.
    17xxx

    Windows Server 2008 R2

    SP1

    GDR

    6.1.760
    1.
    21xxx

    Windows Server 2008 R2

    SP1

    LDR

  • 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 Server 2008 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 x64-based versions of Windows Server 2008 R2

File name

File version

File size

Date

Time

Platform

Dfsrprovs.mfl

Not applicable

109,566

25-Feb-2012

06:03

Not applicable

Dfsrprovs.mof

Not applicable

75,200

13-Jul-2009

20:20

Not applicable

Dfsrress.dll

6.1.7600.16385

2,048

14-Jul-2009

01:26

x64

Dfsrs.exe

6.1.7600.21156

4,531,712

25-Feb-2012

06:33

x64

Dfsrprovs.mof

Not applicable

75,761

24-Feb-2012

23:52

Not applicable

Dfsrress.dll

6.1.7601.17514

2,048

20-Nov-2010

12:57

x64

Dfsrs.exe

6.1.7601.21929

4,536,320

25-Feb-2012

06:11

x64

Status

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

More Information

For more information about software update terminology, click the following article number to view the article in the Microsoft Knowledge Base:

824684 Description of the standard terminology that is used to describe Microsoft software updates

Additional file information

Additional file information for Windows Server 2008 R2

Additional files for all supported x64-based versions of Windows Server 2008 R2

File name

Amd64_0fcc2c1f6199c250437ac9a919a20106_31bf3856ad364e35_6.1.7601.21929_none_3bec8fca5ee0a6c1.manifest

File version

Not applicable

File size

720

Date (UTC)

25-Feb-2012

Time (UTC)

20:57

Platform

Not applicable

File name

Amd64_208c3508b0d2556b5adf8449680e190b_31bf3856ad364e35_6.1.7601.21929_none_65b483f9ebc022e6.manifest

File version

Not applicable

File size

720

Date (UTC)

25-Feb-2012

Time (UTC)

20:57

Platform

Not applicable

File name

Amd64_20d3529e3e2977418299832731eb7a26_31bf3856ad364e35_6.1.7601.21929_none_4a7b745c3619c278.manifest

File version

Not applicable

File size

720

Date (UTC)

25-Feb-2012

Time (UTC)

20:57

Platform

Not applicable

File name

Amd64_21582bbd966b8a84d9e7d0624341181b_31bf3856ad364e35_6.1.7601.21929_none_28aa620c25514080.manifest

File version

Not applicable

File size

720

Date (UTC)

25-Feb-2012

Time (UTC)

20:57

Platform

Not applicable

File name

Amd64_26c762e2c4dc504ceed8328240d8a158_31bf3856ad364e35_6.1.7601.21929_none_6258e0d1e895c282.manifest

File version

Not applicable

File size

720

Date (UTC)

25-Feb-2012

Time (UTC)

20:57

Platform

Not applicable

File name

Amd64_29b278162f7bd973b7feaffdcbbedc9f_31bf3856ad364e35_6.1.7601.21929_none_50b03ea1cdc957a1.manifest

File version

Not applicable

File size

720

Date (UTC)

25-Feb-2012

Time (UTC)

20:57

Platform

Not applicable

File name

Amd64_2d5fa75a7c59df5920538720c9ba581c_31bf3856ad364e35_6.1.7601.21929_none_d0cb7783078eb275.manifest

File version

Not applicable

File size

720

Date (UTC)

25-Feb-2012

Time (UTC)

20:57

Platform

Not applicable

File name

Amd64_2da506e29427494a352e816568ba310d_31bf3856ad364e35_6.1.7601.21929_none_74c3031a5493956a.manifest

File version

Not applicable

File size

712

Date (UTC)

25-Feb-2012

Time (UTC)

20:57

Platform

Not applicable

File name

Amd64_3383a11d3acc6719672f893f5197d862_31bf3856ad364e35_6.1.7601.21929_none_bd3d3b42fe6631cf.manifest

File version

Not applicable

File size

720

Date (UTC)

25-Feb-2012

Time (UTC)

20:57

Platform

Not applicable

File name

Amd64_40b659c54f0a1c663a1be6d69d0fa680_31bf3856ad364e35_6.1.7601.21929_none_15b3c051c48a6b84.manifest

File version

Not applicable

File size

720

Date (UTC)

25-Feb-2012

Time (UTC)

20:57

Platform

Not applicable

File name

Amd64_4680d38a2c684c3d6ebe01a9aa39df4d_31bf3856ad364e35_6.1.7600.21156_none_13ec80ff0815d1aa.manifest

File version

Not applicable

File size

712

Date (UTC)

25-Feb-2012

Time (UTC)

20:57

Platform

Not applicable

File name

Amd64_49ac2562bd1ce1f937b140e2d0ab3fbc_31bf3856ad364e35_6.1.7601.21929_none_6204da4c48cebc97.manifest

File version

Not applicable

File size

720

Date (UTC)

25-Feb-2012

Time (UTC)

20:57

Platform

Not applicable

File name

Amd64_4a2a66c679d06e9f82e764b37e36d2d1_31bf3856ad364e35_6.1.7601.21929_none_0ad21ef719230d11.manifest

File version

Not applicable

File size

720

Date (UTC)

25-Feb-2012

Time (UTC)

20:57

Platform

Not applicable

File name

Amd64_5241b2ca55ff122b8565031c78aa2b3f_31bf3856ad364e35_6.1.7601.21929_none_b54c367e99fb5cef.manifest

File version

Not applicable

File size

720

Date (UTC)

25-Feb-2012

Time (UTC)

20:57

Platform

Not applicable

File name

Amd64_6346e9f622852198896a5d032a8a69c0_31bf3856ad364e35_6.1.7601.21929_none_d199980ffcc9e7c3.manifest

File version

Not applicable

File size

720

Date (UTC)

25-Feb-2012

Time (UTC)

20:57

Platform

Not applicable

File name

Amd64_68f07b8fff7cc01d3256cefc8fbc09da_31bf3856ad364e35_6.1.7601.21929_none_db7c96666323e1ce.manifest

File version

Not applicable

File size

720

Date (UTC)

25-Feb-2012

Time (UTC)

20:57

Platform

Not applicable

File name

Amd64_7362c01288ae79fa509b66c14a8ccd53_31bf3856ad364e35_6.1.7601.21929_none_ac41d456a62534af.manifest

File version

Not applicable

File size

720

Date (UTC)

25-Feb-2012

Time (UTC)

20:57

Platform

Not applicable

File name

Amd64_78d0d98b020d2e7f2a99194f1126e881_31bf3856ad364e35_6.1.7601.21929_none_531e413ee6686590.manifest

File version

Not applicable

File size

720

Date (UTC)

25-Feb-2012

Time (UTC)

20:57

Platform

Not applicable

File name

Amd64_82accf04f7be98511e97fd0c74f0eb71_31bf3856ad364e35_6.1.7601.21929_none_6f93b3950fa9d218.manifest

File version

Not applicable

File size

720

Date (UTC)

25-Feb-2012

Time (UTC)

20:57

Platform

Not applicable

File name

Amd64_8798435fdc596d1669e2717c088c2a1a_31bf3856ad364e35_6.1.7601.21929_none_a4a4aecff037c9b3.manifest

File version

Not applicable

File size

720

Date (UTC)

25-Feb-2012

Time (UTC)

20:57

Platform

Not applicable

File name

Amd64_93ea7a5daa17f8382a76470447e92be3_31bf3856ad364e35_6.1.7601.21929_none_a9085818eb6bb453.manifest

File version

Not applicable

File size

725

Date (UTC)

25-Feb-2012

Time (UTC)

20:57

Platform

Not applicable

File name

Amd64_9aef896ef86befac570c3279f1942c21_31bf3856ad364e35_6.1.7601.21929_none_87b5338b0c6c8a31.manifest

File version

Not applicable

File size

720

Date (UTC)

25-Feb-2012

Time (UTC)

20:57

Platform

Not applicable

File name

Amd64_9c7447205cfb11e2cfb0c3ecc9057764_31bf3856ad364e35_6.1.7601.21929_none_355b25a379b54c8c.manifest

File version

Not applicable

File size

720

Date (UTC)

25-Feb-2012

Time (UTC)

20:57

Platform

Not applicable

File name

Amd64_a613e168e624d788d42287d9ac110968_31bf3856ad364e35_6.1.7601.21929_none_3e4936506716f7d3.manifest

File version

Not applicable

File size

720

Date (UTC)

25-Feb-2012

Time (UTC)

20:57

Platform

Not applicable

File name

Amd64_aef461a5628b13bb3ea71fdcaa08cb74_31bf3856ad364e35_6.1.7601.21929_none_da999c6620e07a30.manifest

File version

Not applicable

File size

720

Date (UTC)

25-Feb-2012

Time (UTC)

20:57

Platform

Not applicable

File name

Amd64_b09f75e08e8fdaa67559160d98f71615_31bf3856ad364e35_6.1.7601.21929_none_aaa307c29700d2d4.manifest

File version

Not applicable

File size

720

Date (UTC)

25-Feb-2012

Time (UTC)

20:57

Platform

Not applicable

File name

Amd64_b2d8e812f0aa6c3f8a107116dd4e9e9f_31bf3856ad364e35_6.1.7601.21929_none_667bb365dab7a59c.manifest

File version

Not applicable

File size

720

Date (UTC)

25-Feb-2012

Time (UTC)

20:57

Platform

Not applicable

File name

Amd64_b6317b9ee88e7747ad3c47049e4b8d6b_31bf3856ad364e35_6.1.7601.21929_none_b915192f23a36729.manifest

File version

Not applicable

File size

720

Date (UTC)

25-Feb-2012

Time (UTC)

20:57

Platform

Not applicable

File name

Amd64_b754b5d53af2c45165e390fd7af171ec_31bf3856ad364e35_6.1.7601.21929_none_b7c4cc13530aaab5.manifest

File version

Not applicable

File size

720

Date (UTC)

25-Feb-2012

Time (UTC)

20:57

Platform

Not applicable

File name

Amd64_c936618250ccc58874c954226988426f_31bf3856ad364e35_6.1.7601.21929_none_e43a57eeaf29f499.manifest

File version

Not applicable

File size

720

Date (UTC)

25-Feb-2012

Time (UTC)

20:57

Platform

Not applicable

File name

Amd64_cdf950f9347ba15130d0edfd910aea44_31bf3856ad364e35_6.1.7601.21929_none_8361ee18ecf7f3c0.manifest

File version

Not applicable

File size

720

Date (UTC)

25-Feb-2012

Time (UTC)

20:57

Platform

Not applicable

File name

Amd64_d02f7511911ebcadd478f9ca999faee6_31bf3856ad364e35_6.1.7601.21929_none_f0dc3e7ce15e3955.manifest

File version

Not applicable

File size

720

Date (UTC)

25-Feb-2012

Time (UTC)

20:57

Platform

Not applicable

File name

Amd64_d62fa931affd1bc503cc02c6a1cedc50_31bf3856ad364e35_6.1.7601.21929_none_7b9cc7a3d82335e9.manifest

File version

Not applicable

File size

720

Date (UTC)

25-Feb-2012

Time (UTC)

20:57

Platform

Not applicable

File name

Amd64_d9c9129f081a4f3d917b4bef4f6b6823_31bf3856ad364e35_6.1.7601.21929_none_9a24b7ecd3e50fde.manifest

File version

Not applicable

File size

720

Date (UTC)

25-Feb-2012

Time (UTC)

20:57

Platform

Not applicable

File name

Amd64_e0c98d7568fbe00c05818edd2b07d522_31bf3856ad364e35_6.1.7601.21929_none_9aa266cc5211efa1.manifest

File version

Not applicable

File size

720

Date (UTC)

25-Feb-2012

Time (UTC)

20:57

Platform

Not applicable

File name

Amd64_e8a43383e533e4f890882f75a3bf12b8_31bf3856ad364e35_6.1.7601.21929_none_cd0b6124b7b509c1.manifest

File version

Not applicable

File size

720

Date (UTC)

25-Feb-2012

Time (UTC)

20:57

Platform

Not applicable

File name

Amd64_f30c2eda0b66cb768b59bd6d62ecce54_31bf3856ad364e35_6.1.7601.21929_none_3883496912871174.manifest

File version

Not applicable

File size

720

Date (UTC)

25-Feb-2012

Time (UTC)

20:57

Platform

Not applicable

File name

Amd64_f9b69e71c6ff369c53bd244a68899b23_31bf3856ad364e35_6.1.7601.21929_none_6bfff132920c4036.manifest

File version

Not applicable

File size

720

Date (UTC)

25-Feb-2012

Time (UTC)

20:57

Platform

Not applicable

File name

Amd64_microsoft-windows-dfsr-core-serveronly_31bf3856ad364e35_6.1.7600.21156_none_fa2b92fcda7cdc96.manifest

File version

Not applicable

File size

35,681

Date (UTC)

25-Feb-2012

Time (UTC)

20:58

Platform

Not applicable

File name

Amd64_microsoft-windows-dfsr-core-serveronly_31bf3856ad364e35_6.1.7601.21929_none_fc358a68d7880a99.manifest

File version

Not applicable

File size

35,681

Date (UTC)

25-Feb-2012

Time (UTC)

20:58

Platform

Not applicable

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