Event 5774 occurs in Windows Server 2003

On a computer that is running Microsoft Windows Server 2003, you may receive an event that is similar to the following:

This problem occurs because Microsoft Windows Server 2003 does not support the MaxFreeTWTcbs registry value to control the number of transport control blocks in a time-wait state.

When a Transport Control Protocol (TCP) connection is closed, the socket pair is put in a time-wait state. This state prevents a new connection from immediately using the same protocol, source IP address, destination IP address, source port, and destination port as the closed connection. Therefore, any segments that may have been misrouted or delayed are not delivered unexpectedly.

RFC 793 specifies the length of time that the socket pair may not be reused as two maximum segment lifetimes (MSL), or four minutes. However, with this default setting, network applications that perform many outgoing connections in a short time may use up all available ports before the ports can be recycled.

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.

Prerequisites

No prerequisites are required.

Restart requirement

You must restart your computer after you apply this hotfix.

Hotfix replacement information

This 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.

Microsoft Windows Server 2003, 32-bit editions

Microsoft Windows Server 2003, 64-Bit Edition

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