An error occurred while dispatching a duplicated socket: this handle is now leaked in the process

The error kept coming up in the System event logs on Microsoft Windows Small Business Server (SBS) 2011.

To fix this, change maxPendingAccepts from 2 to 10 in SMSvcHost.exe.config

<net.tcp maxPendingAccepts="10" ... >

Refs
http://blogs.msdn.com/b/andreal/archive/2009/04/05/net-tcp-ip-port-sharing.aspx