After you configure Internet Connection Sharing in Windows Vista, you may find that, although the network connection works correctly at first, the network connection stops working after one-to-two hours. For example, you may be unable to connect to the Internet, to other computers on the local area network (LAN), or to network resources on the LAN.

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This problem occurs because of a bug in the WinSock bind() function.

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Service pack information

To resolve this problem, obtain the latest service pack for Windows Vista. For more information, click the following article number to view the article in the Microsoft Knowledge Base:

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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 this specific problem. 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: 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

No prerequisites are required.

Restart requirement

You must restart your computer after you apply this hotfix.

Hotfix replacement information

This hotfix does not replace a previously released hotfix.

File information

The English version of this hotfix has the file attributes (or later file attributes) that are listed in the following table. The dates and times for these files are listed in Coordinated Universal Time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time item in Control Panel.

Windows Vista, x86-based versions

File name	File version	File size	Date	Time	Platform
Netio.sys	6.0.6000.20597	217,272	12-May-2007	02:20	x86
Update.mum	Not applicable	2,218	14-May-2007	18:11	Not applicable
X86_6f3afd5a63c97fc8c8030ef47028c44f_31bf3856ad364e35_6.0.6000.20597_none_e9c22ebd978f6a2c.manifest	Not applicable	1,045	14-May-2007	18:11	Not applicable
X86_microsoft-windows-netio-infrastructure_31bf3856ad364e35_6.0.6000.20597_none_54e479e8d18748c4.manifest	Not applicable	4,162	14-May-2007	18:14	Not applicable
X86_microsoft-windows-tcpip_31bf3856ad364e35_6.0.6000.20597_none_5fcea2efab936c1d.manifest	Not applicable	30,540	14-May-2007	18:14	Not applicable
Netiomig.dll	6.0.6000.20597	49,152	12-May-2007	02:16	x86
Netiougc.exe	6.0.6000.20597	22,016	12-May-2007	01:30	x86
Tcpip.sys	6.0.6000.20597	803,840	12-May-2007	01:31	x86
Tcpipcfg.dll	6.0.6000.20597	167,424	12-May-2007	02:16	x86

Windows Vista, 64-bit versions

File name	File version	File size	Date	Time	Platform	Service branch
Amd64_4f6a2dedb1c9dc859126b4d90b662383_31bf3856ad364e35_6.0.6000.20597_none_fe3288adb6197e2e.manifest	Not applicable	1,051	14-May-2007	18:11	Not applicable	Not applicable
Amd64_93e9311ca92486efb11966358a7390cc_31bf3856ad364e35_6.0.6000.20597_none_1c92da281782d392.manifest	Not applicable	1,051	14-May-2007	18:11	Not applicable	Not applicable
Amd64_microsoft-windows-netio-infrastructure_31bf3856ad364e35_6.0.6000.20597_none_b103156c89e4b9fa.manifest	Not applicable	4,170	14-May-2007	18:20	Not applicable	Not applicable
Amd64_microsoft-windows-tcpip_31bf3856ad364e35_6.0.6000.20597_none_bbed3e7363f0dd53.manifest	Not applicable	30,610	14-May-2007	18:20	Not applicable	Not applicable
Netio.sys	6.0.6000.20597	324,792	12-May-2007	03:34	x64	Not applicable
Package_1_for_kb937168~31bf3856ad364e35~amd64~~6.0.1.0.mum	Not applicable	2,014	14-May-2007	18:11	Not applicable	Not applicable
Package_2_for_kb937168~31bf3856ad364e35~amd64~~6.0.1.0.mum	Not applicable	2,231	14-May-2007	18:11	Not applicable	Not applicable
Update.mum	Not applicable	2,218	14-May-2007	18:11	Not applicable	Not applicable
Wow64_microsoft-windows-netio-infrastructure_31bf3856ad364e35_6.0.6000.20597_none_bb57bfbebe457bf5.manifest	Not applicable	2,730	12-May-2007	02:29	Not applicable	Not applicable
Wow64_microsoft-windows-tcpip_31bf3856ad364e35_6.0.6000.20597_none_c641e8c598519f4e.manifest	Not applicable	24,297	14-May-2007	18:20	Not applicable	Not applicable
Netiomig.dll	6.0.6000.20597	59,904	12-May-2007	03:29	x64	Not applicable
Netiougc.exe	6.0.6000.20597	25,600	12-May-2007	01:58	x64	Not applicable
Tcpip.sys	6.0.6000.20597	1,193,472	12-May-2007	01:59	x64	Not applicable
Tcpipcfg.dll	6.0.6000.20597	232,960	12-May-2007	03:30	x64	Not applicable
Netiomig.dll	6.0.6000.20597	49,152	12-May-2007	02:16	x86	WOW64_MICROSOFT-WINDOWS-TCPIP_31BF3856AD364E35_6.0.6000.20597_NONE_C641E8C598519F4E
Netiougc.exe	6.0.6000.20597	22,016	12-May-2007	01:30	x86	WOW64_MICROSOFT-WINDOWS-TCPIP_31BF3856AD364E35_6.0.6000.20597_NONE_C641E8C598519F4E
Tcpipcfg.dll	6.0.6000.20597	167,424	12-May-2007	02:16	x86	WOW64_MICROSOFT-WINDOWS-TCPIP_31BF3856AD364E35_6.0.6000.20597_NONE_C641E8C598519F4E

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Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section. This problem was first corrected in Windows Vista Service Pack 1.

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To verify whether Windows Vista is using Internet Connection Sharing, follow these steps:

1.	Click Start, type Services.msc in the Start Search box, and then click Services.msc in the Programs list. If you are prompted for an administrator password or for confirmation, type your password, or click Continue.
2.	Find the Internet Connection Sharing (ICS) service in the Name column, and then examine the status for the service in the Status Column. Windows Vista is using Internet Connection Sharing if the Status column for the service shows Started.

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

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