Registry Home > Network > Protocols > TCP-IP

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

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.

This tweak can be easily applied using WinGuides Tweak Manager.
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Open your registry and find or create the key below.

Create a new DWORD value, or modify the existing value, called "TcpTimedWaitDelay" and set it according to the value data below.

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

Registry Editor Example
|(Default)REG_SZ(value not set)|
|TcpTimedWaitDelayREG_DWORD0x0000001e (30)|
Registry Settings
System Key: [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters]
Value Name: TcpTimedWaitDelay
Data Type: REG_DWORD (DWORD Value)
Value Data: 30-300 seconds (decimal)

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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