Wireless Hosted Network feature does not work in Windows 7 or Windows Server 2008 R2

Symptoms

Consider the following scenario:
  • You have a Windows 7-based or Windows Server 2008 R2-based computer that has a Hosted Network-capable wireless adapter installed.
  • You enable the Wireless Hosted Network feature to use Virtual Wi-Fi on this computer.
  • You create a software-based wireless access point (AP) that uses a designated virtual wireless adapter.
  • You connect a client computer to the software-based wireless AP.
  • You stop and start the software-based wireless AP repeatedly.
In this scenario, the Internet Connection Sharing service freezes. Additionally, the client computer cannot use Virtual Wi-Fi until you restart the system.

Cause

This issue occurs because of a deadlock in Ipnathlp.dll.

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: Note 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

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
属性

文章 ID:2796725 - 上次审阅时间:2013年2月21日 - 修订版本: 1

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