SocketException on Windows XP home edition on connect: an invalid argument was supplied

Hi,

Our software needs to connect to an server and we do that with use of an TCPclient. 50+ systems (all Windows XP pro) are using the software and have no problem with connecting. The software also has been tested on windows vista an Windows 7 beta.

Today there are some external people here for training and one of them has a laptop with Windows XP Home edition, which fails to connect to the server with SocketExeption "an invalid argument was supplied". (windows socket exception code: 10022)

However, when we try to telnet to that ip and port on the same laptop we can make a connection.

The code to connect is very basic:

m_client = new TcpClient();
m_client.Connect(System.Net.IPAddress.Parse(host), port);

Are there any additional socketoptions we have to set on Windows XP Home edition?

About his system: Windows XP Home edition version 2002 Service pack 2 One network-card active: Broadcom 440x 10/100 Integrated Controller

From stackoverflow

• Just for people who wonder. We never got the time to further investigate the issue. It seemed to be a problem with the host's pc...