Microsoft KB Archive/328264

= Network performance decreases when you use a program that uses the SO_CONDITIONAL_ACCEPT socket option to communicate =

Article ID: 328264

Article Last Modified on 2/21/2007

-

APPLIES TO


 * Microsoft Windows XP Professional
 * Microsoft Windows 2000 Advanced Server
 * Microsoft Windows 2000 Professional Edition
 * Microsoft Windows 2000 Server

-



This article was previously published under Q328264





SYMPTOMS
Network performance may decrease significantly when you use a program that is configured to communicate by using the SO_CONDITIONAL_ACCEPT socket option.



CAUSE
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 now available from Microsoft, but it is only intended to correct the problem that is described in this article. Only apply it to systems that are experiencing this specific problem. This hotfix may receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next Windows 2000 or Microsoft Windows XP service pack that contains this hotfix.

To resolve this problem immediately, 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:

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

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) 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.

Windows XP
  Date         Time   Version        Size     File name -  25-Sep-2002  23:55  5.1.2600.1127  126,336  Afd.sys

Windows 2000
  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



STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the &quot;Applies to&quot; section.

Windows 2000
This problem was first corrected in Windows 2000 Service Pack 4.

Windows XP
This problem was first corrected in Microsoft Windows XP Service Pack 2.



MORE INFORMATION
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

Keywords: kbhotfixserver kbqfe kbwinxpsp2fix kbqfe kbbug kbfix kbwin2000presp4fix KB328264

-

[mailto:TECHNET@MICROSOFT.COM Send feedback to Microsoft]

© Microsoft Corporation. All rights reserved.