Symptoms

Consider the following scenario:

  • A Forefront Unified Access Gateway DirectAccess server is deployed in a corporate environment.

  • A web proxy that denies access to the UAG DA server is deployed in the corporate environment.

  • Force tunneling is enabled on the UAG DA server, and all network traffic is sent over the DA client tunnel by using the IP over HTTPS (IP-HTTPS) protocol.

  • The DA client is deployed on a client computer that is running Windows 7 or Windows Server 2008 R2.

  • The client computer is connected to the corporate environment.

  • The DA client cannot connect to the UAG DA server.

    Note This behavior is by design. This behavior occurs because the web proxy blocks the traffic.

  • The client computer is disconnected from the corporate environment and is connected to the Internet.

In this scenario, the DA client cannot reconnect to the UAG DA server.

Note If you run the netsh int httpstunnel show interfaces command when the client computer is connected to the corporate environment, you receive the following output. The netsh int httpstunnel show interfaces command displays the IP-HTTPS interface parameters.

Interface IPHTTPSInterface (Group Policy) Parameters 
------------------------------------------------------------
Role : client
URL : [UAG DA server IPHTTPS URL]
Last Error Code : 0x103
Interface Status : no usable certificate(s) found

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 Web site:

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 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 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 7 and Windows Server 2008 R2 file information notes


  • 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
    1.21xxx

    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 Server 2008 R2 and for Windows 7" 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 7

File name

File version

File size

Date

Time

Platform

Iphlpsvc.dll

6.1.7601.21855

500,736

05-Nov-2011

04:30

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

Iphlpsvc.dll

6.1.7601.21855

570,368

05-Nov-2011

05:33

x64

Iphlpsvcmigplugin.dll

6.1.7601.21855

51,200

05-Nov-2011

04:30

x86

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

File name

File version

File size

Date

Time

Platform

Iphlpsvc.dll

6.1.7601.21855

982,016

05-Nov-2011

04:23

IA-64

Iphlpsvcmigplugin.dll

6.1.7601.21855

51,200

05-Nov-2011

04:30

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 DirectAccess, visit the following Microsoft website:

General information about DirectAccessFor 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_0a7fbe79444409ba9f8245ee4f314c1b_31bf3856ad364e35_6.1.7601.21855_none_3673b3db5a134400.manifest

File version

Not Applicable

File size

716

Date (UTC)

05-Nov-2011

Time (UTC)

09:08

File name

X86_microsoft-windows-i..oexistencemigration_31bf3856ad364e35_6.1.7601.21855_none_1449ddeef3d9a7e4.manifest

File version

Not Applicable

File size

131,037

Date (UTC)

05-Nov-2011

Time (UTC)

09:12

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

File name

Amd64_22c8cbea4b19332e628d0d6fc9543ab6_31bf3856ad364e35_6.1.7601.21855_none_a1bc6211901f3bcb.manifest

File version

Not Applicable

File size

720

Date (UTC)

05-Nov-2011

Time (UTC)

09:08

File name

Amd64_236922d5e3db06b2595836d58e43ca42_31bf3856ad364e35_6.1.7601.21855_none_6f2a52cd30a0f71b.manifest

File version

Not Applicable

File size

720

Date (UTC)

05-Nov-2011

Time (UTC)

09:08

File name

Amd64_e16c6a0ad18781725aabc36a5bc2df97_31bf3856ad364e35_6.1.7601.21855_none_520b8e7d01f1b63c.manifest

File version

Not Applicable

File size

1,082

Date (UTC)

05-Nov-2011

Time (UTC)

09:08

File name

Amd64_microsoft-windows-i..oexistencemigration_31bf3856ad364e35_6.1.7601.21855_none_70687972ac37191a.manifest

File version

Not Applicable

File size

131,043

Date (UTC)

05-Nov-2011

Time (UTC)

09:18

File name

Wow64_microsoft-windows-i..oexistencemigration_31bf3856ad364e35_6.1.7601.21855_none_7abd23c4e097db15.manifest

File version

Not Applicable

File size

123,749

Date (UTC)

05-Nov-2011

Time (UTC)

04:48

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

File name

Ia64_a49c3b5d50822bcdffd0953fb63f3116_31bf3856ad364e35_6.1.7601.21855_none_d76d3d6cbd6671a9.manifest

File version

Not Applicable

File size

1,080

Date (UTC)

05-Nov-2011

Time (UTC)

09:08

File name

Ia64_microsoft-windows-i..oexistencemigration_31bf3856ad364e35_6.1.7601.21855_none_144b81e4f3d7b0e0.manifest

File version

Not Applicable

File size

131,040

Date (UTC)

05-Nov-2011

Time (UTC)

09:08

File name

Wow64_microsoft-windows-i..oexistencemigration_31bf3856ad364e35_6.1.7601.21855_none_7abd23c4e097db15.manifest

File version

Not Applicable

File size

123,749

Date (UTC)

05-Nov-2011

Time (UTC)

04:48

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