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Q170791: Windows 95 TCP Clients Run Out of Ports

Article: Q170791
Product(s): Microsoft Windows 95.x Retail Product
Version(s): 1,2,2.1
Operating System(s): 
Keyword(s): kbnetwork osr1 osr2 win95kbfixlist
Last Modified: 25-MAR-2002

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The information in this article applies to:

- Microsoft Windows 95 
- Microsoft Windows 95 OEM Service Release, versions 1, 2, 2.1 
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SYMPTOMS
========

When you are running programs in Windows 95 that use excessive numbers of TCP
ports (more than 3976 simultaneously), Windows may run out of TCP ports before
the TCP/IP protocol releases closed connections.

CAUSE
=====

The TCP/IP state dictates that when a connection is closed, the connection is
not released until two maximum segment lives (MSLs) have passed. This state is
defined as the TIME-WAIT state. One MSL is defined as 120 seconds, and it takes
four minutes for a closed connection to be released in TCP/IP.

RESOLUTION
==========


STATUS
======

This problem no longer occurs in Windows 98. To resolve this problem, install
the current version of Windows. For information about the current version of
Windows, visit http://www.microsoft.com/windows.

MORE INFORMATION
================


Additional query words:

======================================================================
Keywords          : kbnetwork osr1 osr2 win95 kbfixlist
Technology        : kbWin95search kbOPKSearch kbZNotKeyword3 kbWin95OPKOSR2 kbWin95OPKOSR1 kbWin95OPKOSR210
Version           : :1,2,2.1

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