Knowledge Base

This problem can appear either because you are using too high a port number or because too many concurrent IP connections are open.

To resolve this problem you need to modify the registry to add two new values.

In the registry editor, go to the key
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters]
Right-click and select New DWORD 32 bits Value
Name it – TcpNumConnections and double-click on it.
Select it as Hexadecimal.
Set value to 00FF and click OK.
Now, you’ll be able to open 255 concurrent connections.

In the registry editor, go to the key
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters]
Right-click and select New, DWORD 32 bits Value
Name it – MaxUserPort and double-click on it.
Select it as Hexadecimal.
Set value to EA60 and click OK.
Now, you’ll be able to use port number up to 60000