you can modify windows REGISTRY
to fix that,
first in regedit open this path:
HKLM\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters
and create 4 new DWORD
as this key and values:
TcpTimedWaitDelay
REG_DWORD: 0000001e (hex)
MaxUserPort
REG_DWORD: 0000fffe (hex)
TcpNumConnections
REG_DWORD: 00fffffe (hex)
TcpMaxDataRetransmissions
REG_DWORD: 00000005 (hex)
like with this screen shot: