You cannot access a DFS share by using a valid user account in Windows Server 2008 R2, in Windows 7, in Windows Vista or in Windows Server 2008

Symptoms

Consider the following scenario:

  • You create a user account in a Windows Server 2008 domain or in a Windows Server 2008 R2 domain.

  • You use the adsiedit.exe utility to customize the following two attributes of the user account:

    • userPrincipalName

    • sAMAccountName

  • The user principal name (UPN) prefix in the customized UPN differs from the customized Security Accounts Manager (SAM) account name.

  • You try to access a Distributed File System (DFS) share by using the user account from a computer that is running one of the following operating systems:

    • Windows Vista

    • Windows Server 2008

    • Windows 7

    • Windows Server 2008 R2

In this scenario, you experience one of the following issues:

  • You cannot access the DFS share, and you receive the following error message if you access the DFS share by using a command prompt:

    System error 86 has occurred
    The specified network password is not correct

  • You cannot access the DFS share, and you are prompted to input the user name and the password again if you access the DFS share by using the graphical user interface (GUI). For example, you cannot access the DFS share, and you are prompted to input your user name and your password again if you access the DFS share by using Windows Explorer.

Cause

This issue occurs because the DFS Client driver (dfsc.sys) incorrectly splits the UPN into a user name and domain name pair before the UPN is sent for authentication. If the UPN prefix is customized and does not match the SAM account name, the user authentication fails, and the issue that is described in the "Symptoms" section occurs.

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 Vista Service Pack 1 (SP1)

  • Windows Vista Service Pack 2 (SP2)

  • Windows Server 2008

  • Windows Server 2008 Service Pack 2 (SP2)

  • Windows 7

  • Windows 7 Service Pack 1 (SP1)

  • Windows Server 2008 R2

  • Windows Server 2008 R2 Service Pack 1 (SP1)

For more information about how to obtain a Windows Vista service pack, click the following article number to view the article in the Microsoft Knowledge Base:

935791 How to obtain the latest Windows Vista service pack

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

968849 How to obtain the latest service pack for Windows Server 2008

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 use 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 Vista and Windows Server 2008 file information notes

Important Windows Vista hotfixes and Windows Server 2008 hotfixes are included in the same packages. However, only "Windows Vista" 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 Vista" 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

    6.0.600
    1.
    22xxx

    Windows Vista and Windows Server 2008

    SP1

    LDR

    6.0.600
    2.
    22xxx

    Windows Vista and Windows Server 2008

    SP2

    LDR

  • Service Pack 1 is integrated into the release version of Windows Server 2008.

  • 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 and for Windows Vista" section. MUM files 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 Server 2008 and of Windows Vista

File name

File version

File size

Date

Time

Platform

Dfsc.sys

6.0.6001.22961

75,264

03-Sep-2011

10:28

x86

Dfsc.sys

6.0.6002.22710

75,264

03-Sep-2011

12:31

x86

For all supported x64-based versions of Windows Server 2008 and of Windows Vista

File name

File version

File size

Date

Time

Platform

Dfsc.sys

6.0.6001.22961

97,792

03-Sep-2011

10:48

x64

Dfsc.sys

6.0.6002.22710

97,792

03-Sep-2011

10:58

x64

For all supported IA-64-based versions of Windows Server 2008

File name

File version

File size

Date

Time

Platform

Dfsc.sys

6.0.6001.22961

238,592

03-Sep-2011

10:28

IA-64

Dfsc.sys

6.0.6002.22710

238,592

03-Sep-2011

11:01

IA-64

Windows 7 and 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, 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
    0.20xxx

    Windows 7 and Windows Server 2008 R2

    RTM

    LDR

    6.1.760
    1.21xxx

    Windows 7 and 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 7 and for Windows Server 2008 R2" 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 x86-based versions of Windows 7

File name

File version

File size

Date

Time

Platform

Dfsc.sys

6.1.7600.20969

78,336

19-May-2011

03:23

x86

Dfsc.sys

6.1.7601.21730

78,336

19-May-2011

03:31

x86

For all supported x64-based versions of Windows 7 and of Windows Server 2008 R2

File name

File version

File size

Date

Time

Platform

Dfsc.sys

6.1.7600.20969

102,400

19-May-2011

03:23

x64

Dfsc.sys

6.1.7601.21730

102,400

19-May-2011

03:14

x64

For all supported IA-64-based versions of Windows Server 2008 R2

File name

File version

File size

Date

Time

Platform

Dfsc.sys

6.1.7600.20969

247,296

19-May-2011

02:49

IA-64

Dfsc.sys

6.1.7601.21730

247,296

19-May-2011

02:46

IA-64

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 user naming attributes, visit the following Microsoft website:

General information about user naming attributesFor 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 Vista and for Windows Server 2008

Additional files for all supported x86-based versions of Windows Vista and of Windows Server 2008

File name

Update.mum

File version

Not Applicable

File size

3,577

Date (UTC)

05-Sep-2011

Time (UTC)

11:31

Platform

Not Applicable

File name

X86_27cb058102b33e1a17057082dd4a27d0_31bf3856ad364e35_6.0.6001.22961_none_e8c8dd570fe2b5a7.manifest

File version

Not Applicable

File size

697

Date (UTC)

05-Sep-2011

Time (UTC)

11:31

Platform

Not Applicable

File name

X86_6f68ca36d77be3a3829c7e13fbc64253_31bf3856ad364e35_6.0.6002.22710_none_7f0532e283645473.manifest

File version

Not Applicable

File size

697

Date (UTC)

05-Sep-2011

Time (UTC)

11:31

Platform

Not Applicable

File name

X86_microsoft-windows-dfsclient_31bf3856ad364e35_6.0.6001.22961_none_87e3fa9aff692edd.manifest

File version

Not Applicable

File size

10,277

Date (UTC)

03-Sep-2011

Time (UTC)

12:30

Platform

Not Applicable

File name

X86_microsoft-windows-dfsclient_31bf3856ad364e35_6.0.6002.22710_none_89ff7dbafc67dc1c.manifest

File version

Not Applicable

File size

10,277

Date (UTC)

03-Sep-2011

Time (UTC)

16:37

Platform

Not Applicable

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

File name

Amd64_b3f9e7e3397286baa473359ead33b74b_31bf3856ad364e35_6.0.6001.22961_none_48088b6d981951c7.manifest

File version

Not Applicable

File size

701

Date (UTC)

05-Sep-2011

Time (UTC)

11:31

Platform

Not Applicable

File name

Amd64_fda98d4f2dae9bbd28967972e76b61e7_31bf3856ad364e35_6.0.6002.22710_none_c583fed487559215.manifest

File version

Not Applicable

File size

701

Date (UTC)

05-Sep-2011

Time (UTC)

11:31

Platform

Not Applicable

File name

Amd64_microsoft-windows-dfsclient_31bf3856ad364e35_6.0.6001.22961_none_e402961eb7c6a013.manifest

File version

Not Applicable

File size

10,538

Date (UTC)

03-Sep-2011

Time (UTC)

13:01

Platform

Not Applicable

File name

Amd64_microsoft-windows-dfsclient_31bf3856ad364e35_6.0.6002.22710_none_e61e193eb4c54d52.manifest

File version

Not Applicable

File size

10,538

Date (UTC)

03-Sep-2011

Time (UTC)

13:29

Platform

Not Applicable

File name

Update.mum

File version

Not Applicable

File size

3,605

Date (UTC)

05-Sep-2011

Time (UTC)

11:31

Platform

Not Applicable

Additional files for all supported IA-64-based versions of Windows Server 2008

File name

Ia64_01b6da68b30a8edf4ca7dd730652f752_31bf3856ad364e35_6.0.6002.22710_none_362c660e68d9873e.manifest

File version

Not Applicable

File size

699

Date (UTC)

05-Sep-2011

Time (UTC)

11:31

Platform

Not Applicable

File name

Ia64_e3b81988cb6f85a57f96052a3306bcdc_31bf3856ad364e35_6.0.6001.22961_none_17d18df1a5e3a2f6.manifest

File version

Not Applicable

File size

699

Date (UTC)

05-Sep-2011

Time (UTC)

11:31

Platform

Not Applicable

File name

Ia64_microsoft-windows-dfsclient_31bf3856ad364e35_6.0.6001.22961_none_87e59e90ff6737d9.manifest

File version

Not Applicable

File size

10,532

Date (UTC)

03-Sep-2011

Time (UTC)

12:30

Platform

Not Applicable

File name

Ia64_microsoft-windows-dfsclient_31bf3856ad364e35_6.0.6002.22710_none_8a0121b0fc65e518.manifest

File version

Not Applicable

File size

10,532

Date (UTC)

03-Sep-2011

Time (UTC)

13:16

Platform

Not Applicable

File name

Update.mum

File version

Not Applicable

File size

2,758

Date (UTC)

05-Sep-2011

Time (UTC)

11:31

Platform

Not Applicable

Additional file information for Windows 7 and for Windows Server 2008 R2

Additional files for all supported x86-based versions of Windows 7

File name

Update.mum

File version

Not applicable

File size

2,773

Date (UTC)

19-May-2011

Time (UTC)

20:58

Platform

Not applicable

File name

X86_53ac4e6f03221bfe6611710ecfb40135_31bf3856ad364e35_6.1.7601.21730_none_d4319cc5e9c6a420.manifest

File version

Not applicable

File size

697

Date (UTC)

19-May-2011

Time (UTC)

20:58

Platform

Not applicable

File name

X86_f7cb89ea886d556c8f55f2412422b43f_31bf3856ad364e35_6.1.7600.20969_none_ca48eaa2c5f4aaa5.manifest

File version

Not applicable

File size

697

Date (UTC)

19-May-2011

Time (UTC)

20:58

Platform

Not applicable

File name

X86_microsoft-windows-dfsclient_31bf3856ad364e35_6.1.7600.20969_none_8813cb4a60793956.manifest

File version

Not applicable

File size

8,646

Date (UTC)

19-May-2011

Time (UTC)

06:06

Platform

Not applicable

File name

X86_microsoft-windows-dfsclient_31bf3856ad364e35_6.1.7601.21730_none_8a11957a5d8f6d60.manifest

File version

Not applicable

File size

8,646

Date (UTC)

19-May-2011

Time (UTC)

06:40

Platform

Not applicable

Additional files for all supported x64-based versions of Windows 7 and of Windows Server 2008 R2

File name

Amd64_efd9b4e5fec8612fdf0251024a23192a_31bf3856ad364e35_6.1.7601.21730_none_3d2cc23261990e25.manifest

File version

Not applicable

File size

701

Date (UTC)

19-May-2011

Time (UTC)

20:58

Platform

Not applicable

File name

Amd64_f7cbfd1ea7019046b758a9391e5de449_31bf3856ad364e35_6.1.7600.20969_none_05c0e7a0179eb3b4.manifest

File version

Not applicable

File size

701

Date (UTC)

19-May-2011

Time (UTC)

20:58

Platform

Not applicable

File name

Amd64_microsoft-windows-dfsclient_31bf3856ad364e35_6.1.7600.20969_none_e43266ce18d6aa8c.manifest

File version

Not applicable

File size

8,648

Date (UTC)

19-May-2011

Time (UTC)

18:43

Platform

Not applicable

File name

Amd64_microsoft-windows-dfsclient_31bf3856ad364e35_6.1.7601.21730_none_e63030fe15ecde96.manifest

File version

Not applicable

File size

8,648

Date (UTC)

19-May-2011

Time (UTC)

19:18

Platform

Not applicable

File name

Update.mum

File version

Not applicable

File size

3,215

Date (UTC)

19-May-2011

Time (UTC)

20:58

Platform

Not applicable

Additional files for all supported IA-64-based versions of Windows Server 2008 R2

File name

Ia64_2e4b0ade110bbeb8766a6508e5de974a_31bf3856ad364e35_6.1.7601.21730_none_63d55d526b21f688.manifest

File version

Not applicable

File size

699

Date (UTC)

19-May-2011

Time (UTC)

20:58

Platform

Not applicable

File name

Ia64_e50f3174991b706177adc44ee96a6f80_31bf3856ad364e35_6.1.7600.20969_none_e51096fc9401583f.manifest

File version

Not applicable

File size

699

Date (UTC)

19-May-2011

Time (UTC)

20:58

Platform

Not applicable

File name

Ia64_microsoft-windows-dfsclient_31bf3856ad364e35_6.1.7600.20969_none_88156f4060774252.manifest

File version

Not applicable

File size

8,647

Date (UTC)

19-May-2011

Time (UTC)

18:44

Platform

Not applicable

File name

Ia64_microsoft-windows-dfsclient_31bf3856ad364e35_6.1.7601.21730_none_8a1339705d8d765c.manifest

File version

Not applicable

File size

8,647

Date (UTC)

19-May-2011

Time (UTC)

19:13

Platform

Not applicable

File name

Update.mum

File version

Not applicable

File size

2,168

Date (UTC)

19-May-2011

Time (UTC)

20:58

Platform

Not applicable

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