A virtual circuit is a communications link that appears to be a direct connection between sender and receiver, although physically the link can be routed through a more circuitous path.
The server service maintains an unused virtual circuit for 2 minutes, by default.
If you decrease this value, it can conserve scarce server resources, but doing so might reduce performance by requiring more virtual circuits be re-established.
To alter the numnber of minutes, use REG.EXE, built into Windows XP, Windows Server 2003, and later operating systems, or installed from the Windows 2000 Support Tools:
1. Open a CMD.EXE Window.
2. Type the following command and press Enter:
REG ADD HKLM\SYSTEM\CurrentControlSet\Services\LanmanServer\Parameters /V ConnectionNoSessionsTimeout / T REG_DWORD /F /D MINUTES
where MINUTES is the number of minutes desired, from 1 through 4294967295.
3. You must stop and start the server service (LanmanServer) or shutdown and restart your computer.
