Microsoft KB Archive/331816

= VPN Client in Windows XP Disconnects After One Minute =

Article ID: 331816

Article Last Modified on 8/29/2007

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APPLIES TO


 * Microsoft Windows XP Home Edition
 * Microsoft Windows XP Professional

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This article was previously published under Q331816



SYMPTOMS
After you install Service Pack 1 (SP1) for Windows XP, your computer may drop virtual private network (VPN) connections that are using Point-to-Point Tunneling Protocol (PPTP) after about 55 seconds.



CAUSE
This behavior may occur if Internet Connection Sharing is turned on for one or more of your network connections.



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

322389 How to obtain the latest Windows XP service pack

Hotfix information
A supported hotfix is now 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 service pack that contains this hotfix.

To resolve this problem, submit a request to Microsoft Online Customer Services to obtain the hotfix. To submit an online request to obtain the hotfix, visit the following Microsoft Web site:

http://go.microsoft.com/?linkid=6294451

Note If additional issues occur or 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. To create a separate service request, visit the following Microsoft Web site:

http://support.microsoft.com/contactus/?ws=support

The English version of this fix has the file attributes (or later) 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 tool in Control Panel.

  Date          Time    Version         Size      File name 14-Nov-2002  14:16   5.1.2600.1142   154,112   Netman.dll 14-Nov-2002  14:16   5.1.2600.1142   435,200   Ipnathlp.dll



WORKAROUND
To work around this problem, turn off Internet Connection Sharing to prevent VPN connections from disconnecting. To do this:
 * 1) Open Network Connections.
 * 2) Right-click the dial-up connection, local area network connection, PPPoE connection, or VPN connection that you no longer want to share, and then click Properties.
 * 3) Click the Advanced tab.
 * 4) Clear the Allow other network users to connect through this computer's Internet connection check box, and then click OK.



STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article. This problem was first corrected in Microsoft Windows XP Service Pack 2.

Keywords: kbhotfixserver kbqfe kbwinxpsp2fix kbbug kbfix kbqfe kbwinxppresp2fix KB331816

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