PPTP VPN that was created by using CMAK is unavailable on a Windows 7-based or Windows Server 2008 R2-based computer

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Symptoms

Consider the following scenario:

  • You create a virtual private network (VPN) connection to an intranet on a client computer that is running Windows 7 or Windows Server 2008 R2.

  • You create the VPN by using a Connection Manager Administration Kit (CMAK) profile.

  • The VPN connection is based on Point-to Point Tunneling Protocol (PPTP).

  • CMAK performs a post-connect action. Specifically, CMAK downloads a .txt file that contains the VPN destination server list from an HTTP address.

In this scenario, the download operation fails and you receive an error message that resembles the following:

WinHttpOpen: error 87 [ERROR_INVALID_PARAMETER]

When this issue occurs, the client computer does not receive an updated destination server list. Therefore, the client computer may try to connect to access points that no longer exist. This behavior causes the VPN service to become unavailable.

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 Windows 7 Service Pack 1 (SP1) or Windows Server 2008 R2 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
    1.17xxx

    Windows 7 and Windows Server 2008 R2

    SP1

    GDR

  • GDR service branches contain only those fixes that are widely released to address widespread, critical issues. LDR service branches contain hotfixes in addition to widely released fixes.

  • 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.

File name

File version

File size

Date

Time

Platform

Cmak.exe

7.2.7601.17514

501,760

20-Nov-2010

12:17

x86

Cmproxy.dll

7.2.7601.17514

16,384

20-Nov-2010

12:18

x86

Cmroute.dll

7.2.7601.22156

34,816

09-Nov-2012

03:46

x86

Quarchk.cmd

Not applicable

3,983

05-Nov-2010

02:10

Not applicable

Rqc.exe

6.1.7601.17514

25,600

20-Nov-2010

12:17

x86

Template.cmp

Not applicable

63

05-Nov-2010

02:10

Not applicable

Template.cms

Not applicable

1,337

05-Nov-2010

02:10

Not applicable

Template.sed

Not applicable

602

05-Nov-2010

02:10

Not applicable

Cmcfg32.dll

7.2.7600.16385

36,864

14-Jul-2009

01:15

x86

Cmdl32.exe

7.2.7601.22156

72,704

09-Nov-2012

03:46

x86

Cmlua.dll

7.2.7600.16385

34,304

14-Jul-2009

01:15

x86

Cmmigr.dll

7.2.7600.16385

58,368

14-Jul-2009

01:15

x86

Cmmon32.exe

7.2.7600.16385

43,008

14-Jul-2009

01:14

x86

Cmpbk32.dll

7.2.7600.16385

26,112

14-Jul-2009

01:15

x86

Cmstp.exe

7.2.7601.22156

84,992

09-Nov-2012

03:46

x86

Cmstplua.dll

7.2.7600.16385

15,360

14-Jul-2009

01:15

x86

Cmutil.dll

7.2.7600.16385

47,104

14-Jul-2009

01:15

x86


File name

File version

File size

Date

Time

Platform

Cmak.exe

7.2.7601.17514

538,624

20-Nov-2010

13:24

x64

Cmproxy.dll

7.2.7601.17514

17,408

20-Nov-2010

13:25

x64

Cmroute.dll

7.2.7601.22156

35,840

09-Nov-2012

05:27

x64

Quarchk.cmd

Not applicable

3,983

05-Nov-2010

02:11

Not applicable

Rqc.exe

6.1.7601.17514

26,624

20-Nov-2010

13:25

x64

Template.cmp

Not applicable

63

05-Nov-2010

02:11

Not applicable

Template.cms

Not applicable

1,337

05-Nov-2010

02:11

Not applicable

Template.sed

Not applicable

602

05-Nov-2010

02:11

Not applicable

Cmcfg32.dll

7.2.7600.16385

37,376

14-Jul-2009

01:40

x64

Cmdl32.exe

7.2.7601.22156

80,384

09-Nov-2012

03:51

x64

Cmlua.dll

7.2.7600.16385

41,984

14-Jul-2009

01:40

x64

Cmmigr.dll

7.2.7600.16385

64,000

14-Jul-2009

01:40

x64

Cmmon32.exe

7.2.7600.16385

45,056

14-Jul-2009

01:39

x64

Cmpbk32.dll

7.2.7600.16385

28,672

14-Jul-2009

01:40

x64

Cmstp.exe

7.2.7601.17514

92,160

20-Nov-2010

13:24

x64

Cmstplua.dll

7.2.7600.16385

18,432

14-Jul-2009

01:40

x64

Cmutil.dll

7.2.7600.16385

58,880

14-Jul-2009

01:40

x64


File name

File version

File size

Date

Time

Platform

Cmak.exe

7.2.7601.17514

758,272

20-Nov-2010

10:22

IA-64

Cmproxy.dll

7.2.7601.17514

39,424

20-Nov-2010

10:24

IA-64

Cmroute.dll

7.2.7601.22156

75,776

09-Nov-2012

04:28

IA-64

Quarchk.cmd

Not applicable

3,983

05-Nov-2010

02:10

Not applicable

Rqc.exe

6.1.7601.17514

55,808

20-Nov-2010

10:23

IA-64

Template.cmp

Not applicable

63

05-Nov-2010

02:10

Not applicable

Template.cms

Not applicable

1,337

05-Nov-2010

02:10

Not applicable

Template.sed

Not applicable

602

05-Nov-2010

02:10

Not applicable

Cmcfg32.dll

7.2.7600.16385

77,312

14-Jul-2009

01:45

IA-64

Cmdl32.exe

7.2.7601.22156

188,928

09-Nov-2012

03:20

IA-64

Cmlua.dll

7.2.7600.16385

78,336

14-Jul-2009

01:45

IA-64

Cmmigr.dll

7.2.7601.22156

139,264

09-Nov-2012

04:28

IA-64

Cmmon32.exe

7.2.7600.16385

95,744

14-Jul-2009

01:44

IA-64

Cmpbk32.dll

7.2.7601.22156

70,656

09-Nov-2012

04:28

IA-64

Cmstp.exe

7.2.7601.17514

175,104

20-Nov-2010

10:22

IA-64

Cmstplua.dll

7.2.7600.16385

37,376

14-Jul-2009

01:45

IA-64

Cmutil.dll

7.2.7601.22156

116,736

09-Nov-2012

04:28

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 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

File name

X86_6357883fb611c2079f1fccc963d6058f_31bf3856ad364e35_6.1.7601.22156_none_ea2239b2a645e42e.manifest

File version

Not applicable

File size

708

Date (UTC)

12-Nov-2012

Time (UTC)

08:01

Platform

Not applicable

File name

X86_d264967178861468e2e0351ef06056e4_31bf3856ad364e35_6.1.7601.22156_none_ebed86e1abb1843b.manifest

File version

Not applicable

File size

695

Date (UTC)

12-Nov-2012

Time (UTC)

08:01

Platform

Not applicable

File name

X86_microsoft-windows-rascmak_31bf3856ad364e35_6.1.7601.22156_none_12f407e5f033621b.manifest

File version

Not applicable

File size

17,622

Date (UTC)

12-Nov-2012

Time (UTC)

08:05

Platform

Not applicable

File name

X86_microsoft-windows-rasconnectionmanager_31bf3856ad364e35_6.1.7601.22156_none_6187e6c5d8041014.manifest

File version

Not applicable

File size

23,740

Date (UTC)

12-Nov-2012

Time (UTC)

08:05

Platform

Not applicable


File name

Amd64_27ae5c9fa3f78271e59f3f82624a765b_31bf3856ad364e35_6.1.7601.22156_none_5e4c3e20bb5b47cc.manifest

File version

Not applicable

File size

699

Date (UTC)

12-Nov-2012

Time (UTC)

08:01

Platform

Not applicable

File name

Amd64_7efcccd1e54a205913d602fbbb6cfcf8_31bf3856ad364e35_6.1.7601.22156_none_fabc92448b06c4d1.manifest

File version

Not applicable

File size

1,066

Date (UTC)

12-Nov-2012

Time (UTC)

08:01

Platform

Not applicable

File name

Amd64_microsoft-windows-rascmak_31bf3856ad364e35_6.1.7601.22156_none_6f12a369a890d351.manifest

File version

Not applicable

File size

17,630

Date (UTC)

12-Nov-2012

Time (UTC)

08:07

Platform

Not applicable

File name

Amd64_microsoft-windows-rasconnectionmanager_31bf3856ad364e35_6.1.7601.22156_none_bda682499061814a.manifest

File version

Not applicable

File size

23,746

Date (UTC)

12-Nov-2012

Time (UTC)

08:07

Platform

Not applicable

File name

Wow64_microsoft-windows-rasconnectionmanager_31bf3856ad364e35_6.1.7601.22156_none_c7fb2c9bc4c24345.manifest

File version

Not applicable

File size

23,302

Date (UTC)

12-Nov-2012

Time (UTC)

08:07

Platform

Not applicable


File name

Ia64_384cc3896ad8dc286315780278ce5930_31bf3856ad364e35_6.1.7601.22156_none_e0bb6a97086b778f.manifest

File version

Not applicable

File size

1,064

Date (UTC)

12-Nov-2012

Time (UTC)

08:01

Platform

Not applicable

File name

Ia64_dedaebcd61d2d720c700767634cb2d67_31bf3856ad364e35_6.1.7601.22156_none_0b094c0d0dbdce59.manifest

File version

Not applicable

File size

697

Date (UTC)

12-Nov-2012

Time (UTC)

08:01

Platform

Not applicable

File name

Ia64_microsoft-windows-rascmak_31bf3856ad364e35_6.1.7601.22156_none_12f5abdbf0316b17.manifest

File version

Not applicable

File size

17,626

Date (UTC)

12-Nov-2012

Time (UTC)

08:02

Platform

Not applicable

File name

Ia64_microsoft-windows-rasconnectionmanager_31bf3856ad364e35_6.1.7601.22156_none_61898abbd8021910.manifest

File version

Not applicable

File size

23,743

Date (UTC)

12-Nov-2012

Time (UTC)

08:02

Platform

Not applicable


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