VAN UI freezes after KB2813956 is applied in Windows 7

Applies to: Windows 7 Service Pack 1Windows 7 EnterpriseWindows 7 Home Basic More

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 Download Center
The following files are available for download from the Microsoft Download Center:
Operating systemUpdate
All supported x86-based versions of Windows 7Download Download the update package now.
All supported x64-based versions of Windows 7Download 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.

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