SYMPTOMS
After you follow the steps in the Microsoft Knowledge Base article 328890 to set the
TcpAckFrequency registry entry to the value of 1, you do not see any difference in the delayed TCP Acknowledgment (ACK) behavior of the computer where you modified this entry.
For additional information about this behavior, click the following article number to view the article in the Microsoft Knowledge Base:
328890
New registry entry for controlling the TCP Acknowledgment (ACK) behavior in Windows XP and in Windows Server 2003
RESOLUTION
Microsoft Windows Server 2003
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 Server 2003 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:
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.PrerequisitesNo prerequisites are required.Restart requirementYou must restart your computer after you apply this hotfix.Hotfix replacement informationThis hotfix does not replace any other hotfixes.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.
Windows Server 2003, 32-bit editionsDate Time Version Size File name
----------------------------------------------------
11-Sep-2003 00:04 5.2.3790.84 333,824 Tcpip.sys
Date Time Version Size File name
----------------------------------------------------
11-Sep-2003 00:00 5.2.3790.84 969,728 Tcpip.sys
Microsoft Windows XP
Service pack information
To resolve this problem, obtain the latest service pack for 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, 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 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:
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.PrerequisitesNo prerequisites are required.Restart requirementYou must restart your computer after you apply this hotfix.Hotfix replacement informationThis hotfix does not replace any other hotfixes.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.
Windows XPDate Time Version Size File name
------------------------------------------------------
11-Sep-2003 21:35 5.1.2600.1267 333,440 Tcpip.sys
Date Time Version Size File name
-------------------------------------------------------
11-Sep-2003 21:16 5.1.2600.1267 1,093,248 Tcpip.sys