Symptoms

Consider the following scenario:

  • You have a Windows 7-based computer that uses mobile broadband connection.

  • You apply the KB2813956 update on the computer.

  • You roam through different network providers. For example, this occurs when you are traveling.

  • You manually register with a network provider on the computer.

In this scenario, the connection fails and the View Available Networks UI (VAN UI) freezes.

Note You can restart the Wireless Wide Area Network (WWAN) AutoConfig service (WWANSvc) to recover from this issue. 

For more information about KB2813956, click the following article number to view the article in the Microsoft Knowledge Base:

2813956 Mobile broadband network provider disappears from VAN UI in Windows 7

Cause

This issue occurs because of a problem in the WWAN AutoConfig service.

Resolution

Update information

How to obtain this update

Microsoft Update

This update is available from the Microsoft Update website:

Microsoft Update

Microsoft Download Center

The following files are available for download from the Microsoft Download Center:

Operating system

Update

All supported x86-based versions of Windows 7

Download Download the update package now.

All supported x64-based versions of Windows 7

Download Download the update package now.

For more information about how to download Microsoft support files, click the following article number to view the article in the Microsoft Knowledge Base:

119591 How to obtain Microsoft support files from online services
Microsoft scanned this file for viruses. Microsoft used the most current virus-detection software that was available on the date that the file was posted. The file is stored on security-enhanced servers that help prevent any unauthorized changes to the file.

Prerequisites

To apply this update, you must be running Windows 7 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 update, you do not have to make any changes to the registry.

Restart requirement

You must restart the computer after you apply this update.

The global version of this update 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.

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" section. MUM, MANIFEST, 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

Wwanprotdim.dll

8.1.7601.18113

40,960

19-Mar-2013

03:33

x86

Wwansvc.dll

8.1.7601.18380

185,344

28-Jan-2014

02:07

x86

Wwan_profile_v1.xsd

Not applicable

6,201

10-Jun-2009

21:42

Not applicable

Wwanprotdim.dll

8.1.7601.22583

40,960

28-Jan-2014

02:10

x86

Wwansvc.dll

8.1.7601.22583

185,344

28-Jan-2014

02:10

x86

Wwan_profile_v1.xsd

Not applicable

6,201

10-Jun-2009

21:42

Not applicable

For all supported x64-based versions of Windows 7

File name

File version

File size

Date

Time

Platform

Wwanprotdim.dll

8.1.7601.18113

48,640

19-Mar-2013

05:53

x64

Wwansvc.dll

8.1.7601.18380

228,864

28-Jan-2014

02:32

x64

Wwan_profile_v1.xsd

Not applicable

6,201

10-Jun-2009

21:03

Not applicable

Wwanprotdim.dll

8.1.7601.22583

48,640

28-Jan-2014

02:40

x64

Wwansvc.dll

8.1.7601.22583

228,864

28-Jan-2014

02:40

x64

Wwan_profile_v1.xsd

Not applicable

6,201

10-Jun-2009

21:03

Not applicable


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 for Windows 7

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

File property

Value

File name

Update.mum

File version

Not applicable

File size

1,625

Date (UTC)

28-Jan-2014

Time (UTC)

07:10

Platform

Not applicable

File name

X86_f1b605dd7ffb2ee416d14901b2b908fb_31bf3856ad364e35_6.1.7601.22583_none_a52b5868897f57c0.manifest

File version

Not applicable

File size

695

Date (UTC)

28-Jan-2014

Time (UTC)

07:10

Platform

Not applicable

File name

X86_f638ce6d0f3010b19510a1db358d1d67_31bf3856ad364e35_6.1.7601.18380_none_41ff71cbb310910b.manifest

File version

Not applicable

File size

695

Date (UTC)

28-Jan-2014

Time (UTC)

07:10

Platform

Not applicable

File name

X86_microsoft-windows-wwansvc_31bf3856ad364e35_6.1.7601.18380_none_a32635a77d9518a6.manifest

File version

Not applicable

File size

51,347

Date (UTC)

28-Jan-2014

Time (UTC)

07:13

Platform

Not applicable

File name

X86_microsoft-windows-wwansvc_31bf3856ad364e35_6.1.7601.22583_none_a3b2d53696b0019c.manifest

File version

Not applicable

File size

49,377

Date (UTC)

28-Jan-2014

Time (UTC)

02:36

Platform

Not applicable

Additional files for all supported x64-based versions of Windows 7

File property

Value

File name

Amd64_3ab53a61f8fa1c3ace7bc8a46a94008c_31bf3856ad364e35_6.1.7601.18380_none_f3ff88acb4f8f46d.manifest

File version

Not applicable

File size

699

Date (UTC)

28-Jan-2014

Time (UTC)

07:10

Platform

Not applicable

File name

Amd64_5e1d582fb6c64efb6926ce68cc36bdee_31bf3856ad364e35_6.1.7601.22583_none_1a03a9436c0ec826.manifest

File version

Not applicable

File size

699

Date (UTC)

28-Jan-2014

Time (UTC)

07:10

Platform

Not applicable

File name

Amd64_microsoft-windows-wwansvc_31bf3856ad364e35_6.1.7601.18380_none_ff44d12b35f289dc.manifest

File version

Not applicable

File size

51,351

Date (UTC)

28-Jan-2014

Time (UTC)

07:10

Platform

Not applicable

File name

Amd64_microsoft-windows-wwansvc_31bf3856ad364e35_6.1.7601.22583_none_ffd170ba4f0d72d2.manifest

File version

Not applicable

File size

49,381

Date (UTC)

28-Jan-2014

Time (UTC)

03:07

Platform

Not applicable

File name

Update.mum

File version

Not applicable

File size

1,635

Date (UTC)

28-Jan-2014

Time (UTC)

07:10

Platform

Not applicable


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