This article was previously published under Q328264
This article has been archived. It is offered "as is" and will no longer be updated.
Network performance may decrease significantly when you use a program that is configured to communicate by using the SO_CONDITIONAL_ACCEPT socket option.
When you use this option, incorrect data in the IP Options field of a TCP/IP packet may cause a network firewall to filter the packet out.
Windows XP 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
Windows 2000 service pack information
To resolve this problem, obtain the latest service pack for Microsoft Windows 2000. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:
260910 How to obtain the latest Windows 2000 service pack
Windows 2000 and Windows XP 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.
The English version of this hotfix 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 ----------------------------------------------------- 25-Sep-2002 23:55 5.1.2600.1127 126,336 Afd.sys
Date Time Version Size File name -------------------------------------------------------- 04-Sep-2002 21:11 5.0.2195.6044 118,896 Afd.sys 11-Sep-2002 17:55 5.0.2195.6020 105,232 Msafd.dll 05-Sep-2002 00:07 5.0.2195.6045 313,296 Tcpip.sys 31-Jul-2001 03:15 5.0.2195.3988 16,240 Tdi.sys 11-Sep-2002 17:55 5.0.2195.4874 17,680 Wshtcpip.dll
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 2000 Service Pack 4.
This problem was first corrected in Microsoft Windows XP Service Pack 2.
For additional information about how to obtain a hotfix for Windows 2000 Datacenter Server, click the following article number to view the article in the Microsoft Knowledge Base:
265173 The Datacenter program and Windows 2000 Datacenter Server product