We recommend increasing to 65534 ports, and lowering the recycle timer as you have now done, in order to both allow for more ephemeral connections as well as a faster recycling of unused connections. Start Registry Editor. Backup the registry Browse to, and then click the following key in the registry: HKEY_LOCAL_MACHINESYSTEMCurrentControlSetServicesTcpipParameters On the Edit menu, click New, DWORD Value, and then add the following registry value to increase the number of ephemeral ports that can by dynamically allocated to clients: Value name MaxUserPort Value data On the Edit menu, click New, DWORD Value, and then add the following registry value to reduce the length of time that a connection stays in the TIME_WAIT state when the connection is being closed. While a connection is in the TIME_WAIT state, the socket pair cannot be reused: Value name TcpTimedWaitDelay Value data Close the Registry Editor. Reboot the machine for the changes to take effect Confirm the changes after the restart using this command: netsh int ipv4 show dynamicportrange tcp