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Symptoms

Consider the following scenario:

  • You have two Windows 7-based or Windows Server 2008 R2-based computers (computer A and computer B) in an Active Directory domain environment.

  • Computer A has a credential provider whose GetSerialization function returns a custom authentication structure.

  • Computer A does not have a network connection and saves the credentials of a domain account in a cache.

  • You change the credentials for the domain account on computer B.

  • You log on to computer A by using the old credentials.

  • You lock computer A, and then unlock computer A by using the new credentials.

In this scenario, the Data Protection API (DPAPI) keys are not synchronized after you enter the new credentials. Therefore, you cannot decrypt information that was encrypted by using the DPAPI.

Cause

This issue occurs because the Lsass.exe process does not synchronize the DPAPI keys when you unlock the computer.

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 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 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 this hotfix, 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 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
    0.21xxx

    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

Cng.sys

6.1.7600.21182

369,352

06-Apr-2012

7:00

Ksecdd.sys

6.1.7600.21182

67,440

06-Apr-2012

7:03

Ksecpkg.sys

6.1.7600.21182

134,000

06-Apr-2012

7:03

Lsasrv.dll

6.1.7600.21182

1,037,824

06-Apr-2012

6:54

Lsasrv.mof

Not applicable

13,780

22-Jul-2009

23:19

Lsass.exe

6.1.7600.21182

22,528

06-Apr-2012

6:51

Secur32.dll

6.1.7600.21182

22,016

06-Apr-2012

6:56

Sspicli.dll

6.1.7600.21182

100,352

06-Apr-2012

6:57

Sspisrv.dll

6.1.7600.21182

15,360

06-Apr-2012

6:57

Cng.sys

6.1.7601.21959

369,352

06-Apr-2012

7:45

Ksecdd.sys

6.1.7601.21959

67,440

06-Apr-2012

7:52

Ksecpkg.sys

6.1.7601.21959

134,000

06-Apr-2012

7:52

Lsasrv.dll

6.1.7601.21959

1,038,848

06-Apr-2012

7:39

Lsasrv.mof

Not applicable

13,780

12-Nov-2010

23:53

Lsass.exe

6.1.7601.21959

22,528

06-Apr-2012

7:36

Secur32.dll

6.1.7601.21959

22,016

06-Apr-2012

7:41

Sspicli.dll

6.1.7601.21959

100,352

06-Apr-2012

7:42

Sspisrv.dll

6.1.7601.21959

15,872

06-Apr-2012

7:42

Schannel.dll

6.1.7600.21182

224,768

06-Apr-2012

6:56

Schannel.dll

6.1.7601.21959

224,768

06-Apr-2012

7:41

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

File name

File version

File size

Date

Time

Platform

Cng.sys

6.1.7600.21182

460,296

06-Apr-2012

7:56

x64

Ksecdd.sys

6.1.7600.21182

95,600

06-Apr-2012

8:00

x64

Ksecpkg.sys

6.1.7600.21182

152,432

06-Apr-2012

8:00

x64

Lsasrv.dll

6.1.7600.21182

1,445,888

06-Apr-2012

7:41

x64

Lsasrv.mof

Not applicable

13,780

22-Jul-2009

23:34

Not applicable

Lsass.exe

6.1.7600.21182

31,232

06-Apr-2012

7:38

x64

Secur32.dll

6.1.7600.21182

28,160

06-Apr-2012

7:44

x64

Sspicli.dll

6.1.7600.21182

136,192

06-Apr-2012

7:45

x64

Sspisrv.dll

6.1.7600.21182

28,672

06-Apr-2012

7:45

x64

Cng.sys

6.1.7601.21959

459,232

06-Apr-2012

7:40

x64

Ksecdd.sys

6.1.7601.21959

95,600

06-Apr-2012

7:40

x64

Ksecpkg.sys

6.1.7601.21959

152,432

06-Apr-2012

7:40

x64

Lsasrv.dll

6.1.7601.21959

1,446,400

06-Apr-2012

7:35

x64

Lsasrv.mof

Not applicable

13,780

12-Nov-2010

23:50

Not applicable

Lsass.exe

6.1.7601.21959

31,232

06-Apr-2012

7:31

x64

Secur32.dll

6.1.7601.21959

28,160

06-Apr-2012

7:37

x64

Sspicli.dll

6.1.7601.21959

136,192

06-Apr-2012

7:38

x64

Sspisrv.dll

6.1.7601.21959

29,184

06-Apr-2012

7:38

x64

Schannel.dll

6.1.7600.21182

339,456

06-Apr-2012

7:44

x64

Schannel.dll

6.1.7601.21959

340,992

06-Apr-2012

7:37

x64

Lsasrv.mof

Not applicable

13,780

22-Jul-2009

23:19

Not applicable

Secur32.dll

6.1.7600.21182

22,016

06-Apr-2012

6:56

x86

Sspicli.dll

6.1.7600.21182

96,768

06-Apr-2012

6:49

x86

Lsasrv.mof

Not applicable

13,780

12-Nov-2010

23:53

Not applicable

Secur32.dll

6.1.7601.21959

22,016

06-Apr-2012

7:41

x86

Sspicli.dll

6.1.7601.21959

96,768

06-Apr-2012

7:35

x86

Schannel.dll

6.1.7600.21182

224,768

06-Apr-2012

6:56

x86

Schannel.dll

6.1.7601.21959

224,768

06-Apr-2012

7:41

x86

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

File name

File version

File size

Date

Time

Platform

Cng.sys

6.1.7600.21182

787,504

06-Apr-2012

6:29

IA-64

Ksecdd.sys

6.1.7600.21182

179,568

06-Apr-2012

6:34

IA-64

Ksecpkg.sys

6.1.7600.21182

307,568

06-Apr-2012

6:34

IA-64

Lsasrv.dll

6.1.7600.21182

2,655,232

06-Apr-2012

6:25

IA-64

Lsasrv.mof

Not applicable

13,780

22-Jul-2009

23:59

Not applicable

Lsass.exe

6.1.7600.21182

56,320

06-Apr-2012

6:23

IA-64

Secur32.dll

6.1.7600.21182

48,640

06-Apr-2012

6:28

IA-64

Sspicli.dll

6.1.7600.21182

275,456

06-Apr-2012

6:28

IA-64

Sspisrv.dll

6.1.7600.21182

45,568

06-Apr-2012

6:28

IA-64

Cng.sys

6.1.7601.21959

787,504

06-Apr-2012

6:32

IA-64

Ksecdd.sys

6.1.7601.21959

179,568

06-Apr-2012

6:38

IA-64

Ksecpkg.sys

6.1.7601.21959

307,568

06-Apr-2012

6:38

IA-64

Lsasrv.dll

6.1.7601.21959

2,656,256

06-Apr-2012

6:25

IA-64

Lsasrv.mof

Not applicable

13,780

12-Nov-2010

23:52

Not applicable

Lsass.exe

6.1.7601.21959

56,320

06-Apr-2012

6:21

IA-64

Secur32.dll

6.1.7601.21959

48,640

06-Apr-2012

6:28

IA-64

Sspicli.dll

6.1.7601.21959

275,456

06-Apr-2012

6:29

IA-64

Sspisrv.dll

6.1.7601.21959

46,080

06-Apr-2012

6:29

IA-64

Schannel.dll

6.1.7600.21182

647,680

06-Apr-2012

6:28

IA-64

Schannel.dll

6.1.7601.21959

647,680

06-Apr-2012

6:27

IA-64

Lsasrv.mof

Not applicable

13,780

22-Jul-2009

23:19

Not applicable

Secur32.dll

6.1.7600.21182

22,016

06-Apr-2012

6:56

x86

Sspicli.dll

6.1.7600.21182

96,768

06-Apr-2012

6:49

x86

Lsasrv.mof

Not applicable

13,780

12-Nov-2010

23:53

Not applicable

Secur32.dll

6.1.7601.21959

22,016

06-Apr-2012

7:41

x86

Sspicli.dll

6.1.7601.21959

96,768

06-Apr-2012

7:35

x86

Schannel.dll

6.1.7600.21182

224,768

06-Apr-2012

6:56

x86

Schannel.dll

6.1.7601.21959

224,768

06-Apr-2012

7:41

x86

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 7 and for Windows Server 2008 R2

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

File name

X86_6689039f3e439b621739e34ed83d8f39_31bf3856ad364e35_6.1.7600.21182_none_299980a1b81b8322.manifest

File version

Not applicable

File size

1,040

Date (UTC)

06-Apr-2012

Time (UTC)

22:03

File name

X86_c4a47e62dd376b46a0ae1c9cae8cddcd_31bf3856ad364e35_6.1.7601.21959_none_91b70d7727b00457.manifest

File version

Not applicable

File size

1,040

Date (UTC)

06-Apr-2012

Time (UTC)

22:03

File name

X86_microsoft-windows-lsa_31bf3856ad364e35_6.1.7600.21182_none_a6a76058d73f4398.manifest

File version

Not applicable

File size

99,806

Date (UTC)

06-Apr-2012

Time (UTC)

7:42

File name

X86_microsoft-windows-lsa_31bf3856ad364e35_6.1.7601.21959_none_a8b558ecd446d6f7.manifest

File version

Not applicable

File size

99,806

Date (UTC)

06-Apr-2012

Time (UTC)

8:29

File name

X86_microsoft-windows-security-schannel_31bf3856ad364e35_6.1.7600.21182_none_227320a4cfb6e223.manifest

File version

Not applicable

File size

12,919

Date (UTC)

06-Apr-2012

Time (UTC)

7:53

File name

X86_microsoft-windows-security-schannel_31bf3856ad364e35_6.1.7601.21959_none_24811938ccbe7582.manifest

File version

Not applicable

File size

12,919

Date (UTC)

06-Apr-2012

Time (UTC)

8:35

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

File name

Amd64_20ede3965b0d834ad4aa0b28a45d4455_31bf3856ad364e35_6.1.7601.21959_none_066b82aa31e621ad.manifest

File version

Not applicable

File size

1,383

Date (UTC)

06-Apr-2012

Time (UTC)

22:03

File name

Amd64_53b48a5120153f000f961db4d02089cd_31bf3856ad364e35_6.1.7600.21182_none_d36f51c7f016cb9b.manifest

File version

Not applicable

File size

1,046

Date (UTC)

06-Apr-2012

Time (UTC)

22:03

File name

Amd64_66daa51ae0bac9f4a6caf1fa023b21f3_31bf3856ad364e35_6.1.7600.21182_none_5baca0e584f6f84a.manifest

File version

Not applicable

File size

709

Date (UTC)

06-Apr-2012

Time (UTC)

22:03

File name

Amd64_693224c90f05767651746b06afc845ee_31bf3856ad364e35_6.1.7600.21182_none_d3916fe469dc9264.manifest

File version

Not applicable

File size

1,383

Date (UTC)

06-Apr-2012

Time (UTC)

22:03

File name

Amd64_6959058b7bc4b69673a0f3862b02b4ab_31bf3856ad364e35_6.1.7600.21182_none_089965b017ccfb69.manifest

File version

Not applicable

File size

1,734

Date (UTC)

06-Apr-2012

Time (UTC)

22:03

File name

Amd64_6b84fb69e19998d9c085274eb7422965_31bf3856ad364e35_6.1.7601.21959_none_8d7d2d68ae1a1170.manifest

File version

Not applicable

File size

1,734

Date (UTC)

06-Apr-2012

Time (UTC)

22:03

File name

Amd64_78a75ee47098413cc8272c687b58d342_31bf3856ad364e35_6.1.7601.21959_none_49b3c639d0f98b97.manifest

File version

Not applicable

File size

709

Date (UTC)

06-Apr-2012

Time (UTC)

22:03

File name

Amd64_e365c0a44e17e02be2f01af716dd7fcd_31bf3856ad364e35_6.1.7601.21959_none_cd5a8842f330ac5e.manifest

File version

Not applicable

File size

1,046

Date (UTC)

06-Apr-2012

Time (UTC)

22:03

File name

Amd64_microsoft-windows-lsa_31bf3856ad364e35_6.1.7600.21182_none_02c5fbdc8f9cb4ce.manifest

File version

Not applicable

File size

99,810

Date (UTC)

06-Apr-2012

Time (UTC)

8:35

File name

Amd64_microsoft-windows-lsa_31bf3856ad364e35_6.1.7601.21959_none_04d3f4708ca4482d.manifest

File version

Not applicable

File size

99,810

Date (UTC)

06-Apr-2012

Time (UTC)

8:55

File name

Amd64_microsoft-windows-security-schannel_31bf3856ad364e35_6.1.7600.21182_none_7e91bc2888145359.manifest

File version

Not applicable

File size

12,921

Date (UTC)

06-Apr-2012

Time (UTC)

8:42

File name

Amd64_microsoft-windows-security-schannel_31bf3856ad364e35_6.1.7601.21959_none_809fb4bc851be6b8.manifest

File version

Not applicable

File size

12,921

Date (UTC)

06-Apr-2012

Time (UTC)

9:00

File name

Wow64_microsoft-windows-lsa_31bf3856ad364e35_6.1.7600.21182_none_0d1aa62ec3fd76c9.manifest

File version

Not applicable

File size

86,382

Date (UTC)

06-Apr-2012

Time (UTC)

7:30

File name

Wow64_microsoft-windows-lsa_31bf3856ad364e35_6.1.7601.21959_none_0f289ec2c1050a28.manifest

File version

Not applicable

File size

86,382

Date (UTC)

06-Apr-2012

Time (UTC)

8:24

File name

Wow64_microsoft-windows-security-schannel_31bf3856ad364e35_6.1.7600.21182_none_88e6667abc751554.manifest

File version

Not applicable

File size

6,945

Date (UTC)

06-Apr-2012

Time (UTC)

7:29

File name

Wow64_microsoft-windows-security-schannel_31bf3856ad364e35_6.1.7601.21959_none_8af45f0eb97ca8b3.manifest

File version

Not applicable

File size

6,945

Date (UTC)

06-Apr-2012

Time (UTC)

8:23

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

File name

Ia64_3a798d14bd3a6fa262a977b32dbcfea0_31bf3856ad364e35_6.1.7601.21959_none_00f61775c478e480.manifest

File version

Not applicable

File size

1,731

Date (UTC)

06-Apr-2012

Time (UTC)

22:03

File name

Ia64_a0a3404220d1eb1646bd35ad1f590230_31bf3856ad364e35_6.1.7600.21182_none_812b6103fcb21558.manifest

File version

Not applicable

File size

1,731

Date (UTC)

06-Apr-2012

Time (UTC)

22:03

File name

Ia64_microsoft-windows-lsa_31bf3856ad364e35_6.1.7600.21182_none_a6a9044ed73d4c94.manifest

File version

Not applicable

File size

99,808

Date (UTC)

06-Apr-2012

Time (UTC)

10:06

File name

Ia64_microsoft-windows-lsa_31bf3856ad364e35_6.1.7601.21959_none_a8b6fce2d444dff3.manifest

File version

Not applicable

File size

99,808

Date (UTC)

06-Apr-2012

Time (UTC)

10:33

File name

Ia64_microsoft-windows-security-schannel_31bf3856ad364e35_6.1.7600.21182_none_2274c49acfb4eb1f.manifest

File version

Not applicable

File size

12,920

Date (UTC)

06-Apr-2012

Time (UTC)

10:10

File name

Ia64_microsoft-windows-security-schannel_31bf3856ad364e35_6.1.7601.21959_none_2482bd2eccbc7e7e.manifest

File version

Not applicable

File size

12,920

Date (UTC)

06-Apr-2012

Time (UTC)

10:37

File name

Wow64_microsoft-windows-lsa_31bf3856ad364e35_6.1.7600.21182_none_0d1aa62ec3fd76c9.manifest

File version

Not applicable

File size

86,382

Date (UTC)

06-Apr-2012

Time (UTC)

7:30

File name

Wow64_microsoft-windows-lsa_31bf3856ad364e35_6.1.7601.21959_none_0f289ec2c1050a28.manifest

File version

Not applicable

File size

86,382

Date (UTC)

06-Apr-2012

Time (UTC)

8:24

File name

Wow64_microsoft-windows-security-schannel_31bf3856ad364e35_6.1.7600.21182_none_88e6667abc751554.manifest

File version

Not applicable

File size

6,945

Date (UTC)

06-Apr-2012

Time (UTC)

7:29

File name

Wow64_microsoft-windows-security-schannel_31bf3856ad364e35_6.1.7601.21959_none_8af45f0eb97ca8b3.manifest

File version

Not applicable

File size

6,945

Date (UTC)

06-Apr-2012

Time (UTC)

8:23

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