Change the TIME_WAIT Timeout to Increase Connections (Windows NT/2000/XP)

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Registry tweaks, tricks & hacks to optimize, enhance and secure Microsoft Windows.

Change the TIME_WAIT Timeout to Increase Connections (Windows NT/2000/XP)
Category: Home > Network > Protocols > TCP-IP

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This setting determines the length of time that a connection will stay in the TIME_WAIT state before being closed. The default is 240 seconds which on a busy server will limit the maximum connections to around 200/sec. Reducing this setting will increase the maximum connection limit.

Open your registry and find the key below.

Create a new DWORD value, or modify the existing value called 'TcpTimedWaitDelay' using the settings below.

Exit your registry, you may need to restart or log out of Windows for the change to take effect.


(Default)	REG_SZ	(value not set)
TcpTimedWaitDelay	REG_DWORD	0x0000001e (30)


	HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters

Settings:

System Key: [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters]
Name: TcpTimedWaitDelay
Type: REG_DWORD (DWORD Value)
Value: 30-300 seconds (decimal)

Disclaimer: Modifying the registry can cause serious problems that may require you to reinstall your operating system. We cannot guarantee that problems resulting from modifications to the registry can be solved. Use the information provided at your own risk.

Last Modified: June 18, 2003

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