Symptoms

Consider the following scenario:

  • You attach a 3G modem device to a computer that is running Windows 7 or Windows Server 2008 R2.

  • You establish a dial-up network connection by using the 3G modem, and you can access the Internet.

  • You remove the 3G modem device from the computer without disconnecting the dial-up network connection.

  • You reattach the 3G modem device to the computer.

  • You establish a dial-up network connection in Network Device Interface Specification (NDIS) mode, or you establish a wireless wide area network (WWAN) connection by using the 3G modem device.

In this scenario, you cannot access the Internet. Additionally, when you try to ping an Internet IP address, the operation fails.

Cause

This issue occurs because the Rasmans.dll module sets the DisableDefaultRoutes attribute of the wireless wide area network (WWAN) interface to true, and the module does not restore the attribute when you remove the 3G modem without disconnecting the dial-up network connection.

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 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


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.
    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 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

Rasmans.dll

6.1.7600.21147

286,208

09-Feb-2012

05:41

Rasmans.dll

6.1.7601.21919

286,208

09-Feb-2012

05:54

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

File name

File version

File size

Date

Time

Rasmans.dll

6.1.7600.21147

344,064

09-Feb-2012

06:32

Rasmans.dll

6.1.7601.21919

344,064

09-Feb-2012

06:20

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

File name

File version

File size

Date

Time

Rasmans.dll

6.1.7600.21147

698,368

09-Feb-2012

05:21

Rasmans.dll

6.1.7601.21919

699,392

09-Feb-2012

05:25

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_2dd1cee53e84556814d73f4b4dcbe56d_31bf3856ad364e35_6.1.7600.21147_none_c9cd017969fb2dcd.manifest

File version

Not Applicable

File size

701

Date (UTC)

09-Feb-2012

Time (UTC)

16:33

File name

X86_895c6e7edf4b11b03130bb6eff8c1bf3_31bf3856ad364e35_6.1.7601.21919_none_c8fb42d32009862b.manifest

File version

Not Applicable

File size

701

Date (UTC)

09-Feb-2012

Time (UTC)

16:33

File name

X86_microsoft-windows-rasmanservice_31bf3856ad364e35_6.1.7600.21147_none_9f4aacfa1af79daa.manifest

File version

Not Applicable

File size

12,900

Date (UTC)

09-Feb-2012

Time (UTC)

06:06

File name

X86_microsoft-windows-rasmanservice_31bf3856ad364e35_6.1.7601.21919_none_a153a41c1803b256.manifest

File version

Not Applicable

File size

12,900

Date (UTC)

09-Feb-2012

Time (UTC)

06:20

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

File name

Amd64_8c050da67d30a8cad187f941e5ab4cc1_31bf3856ad364e35_6.1.7600.21147_none_0038aea1df9a70a6.manifest

File version

Not Applicable

File size

705

Date (UTC)

09-Feb-2012

Time (UTC)

16:33

File name

Amd64_f8857dbf7764b2fcd7033b4bb6818f1b_31bf3856ad364e35_6.1.7601.21919_none_e5da6b13cbfc4a88.manifest

File version

Not Applicable

File size

705

Date (UTC)

09-Feb-2012

Time (UTC)

16:33

File name

Amd64_microsoft-windows-rasmanservice_31bf3856ad364e35_6.1.7600.21147_none_fb69487dd3550ee0.manifest

File version

Not Applicable

File size

12,904

Date (UTC)

09-Feb-2012

Time (UTC)

07:03

File name

Amd64_microsoft-windows-rasmanservice_31bf3856ad364e35_6.1.7601.21919_none_fd723f9fd061238c.manifest

File version

Not Applicable

File size

12,904

Date (UTC)

09-Feb-2012

Time (UTC)

07:13

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

File name

Ia64_6781b4de44a8cd37fe8a517652db7029_31bf3856ad364e35_6.1.7601.21919_none_93467cce2cbf312b.manifest

File version

Not Applicable

File size

703

Date (UTC)

09-Feb-2012

Time (UTC)

16:33

File name

Ia64_9bcf869d3301787aad0f05c9310663cc_31bf3856ad364e35_6.1.7600.21147_none_a0eb54832730067a.manifest

File version

Not Applicable

File size

703

Date (UTC)

09-Feb-2012

Time (UTC)

16:33

File name

Ia64_microsoft-windows-rasmanservice_31bf3856ad364e35_6.1.7600.21147_none_9f4c50f01af5a6a6.manifest

File version

Not Applicable

File size

12,902

Date (UTC)

09-Feb-2012

Time (UTC)

07:02

File name

Ia64_microsoft-windows-rasmanservice_31bf3856ad364e35_6.1.7601.21919_none_a15548121801bb52.manifest

File version

Not Applicable

File size

12,902

Date (UTC)

09-Feb-2012

Time (UTC)

07:13

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