If you use a dial-up connection to connect to the Internet, you may be prompted to make a connection when you run a multimedia program. However, you may not be able to make the connection.

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This problem occurs because the network is overloaded by multicast packets that have a Time-To-Live (TTL) setting of 0 (zero). The TCP/IP stack does not handle IP multicast packets correctly and transmits the last fragment of each multicast packet on the network. Therefore, the multicast packets overload the network.

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Hotfix information

A supported hotfix is now available from Microsoft, but it is only intended to correct the problem that this article describes. Apply it only to systems that are experiencing this specific problem.

To resolve this problem, contact Microsoft Product Support Services to obtain the hotfix. For a complete list of Microsoft Product Support Services telephone numbers and information about support costs, visit the following Microsoft Web site:Note In special cases, charges that are ordinarily incurred for support calls may be canceled if a Microsoft Support Professional determines that a specific update will resolve your problem. The usual support costs will apply to additional support questions and issues that do not qualify for the specific update in question.

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 tool in Control Panel.

   Date         Time   Version      Size     File name   Platform
   --------------------------------------------------------------------------------------
   21-Mar-2002  08:27  4.10.0.2001  157,909  NDIS.vxd    Windows 98 (x86)
   01-Aug-2002  09:51  4.10.0.2003  235,605  PPPMAC.vxd  Windows 98 (x86)
   01-Aug-2002  12:15  4.10.0.2004   75,581  VIP.386     Windows 98 (x86)
   21-Mar-2002  08:51  4.10.0.2226  166,053  NDIS.vxd    Windows 98 (x86)
   01-Aug-2002  13:19  4.10.0.2223  235,605  PPPMAC.vxd  Windows 98 Second Edition (x86)
   01-Aug-2002  12:27  4.10.0.2228   80,409  VIP.386     Windows 98 Second Edition (x86)
   07-Feb-2002  17:15  4.90.0.3001  157,397  NDIS.vxd    Windows Millennium Edition (x86)
   05-Mar-2002  13:07  4.90.0.3002  148,045  PPPMAC.vxd  Windows Millennium Edition (x86)
   07-Feb-2002  19:16  4.90.3004.0  224,432  TCPIP.sys   Windows Millennium Edition (x86)

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Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

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Multicast packets that have a TTL setting of 0 should not be transmitted on the network. Such multicast packets should only be looped back to other programs in the local computer.

Before you install the Microsoft Windows 98 hotfix or the Microsoft Windows 98 Second Edition hotfix, you must first install the Dial-Up Networking 1.4 upgrade.

For additional information about how to install this upgrade, click the following article number to view the article in the Microsoft Knowledge Base: For additional information about how the problem that this article describes occurs in Windows 2000 and in Windows XP, click the following article number to view the article in the Microsoft Knowledge Base:

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