1) Ensure you have an anti-virus program
2) Ensure that it is up-to-date
3) Do a complete scan on your system with the anti-virus program
In future, please post the full error message that you get, including the disconnect details (if you are disconnected, which for this type of message is standard).
If you need further assistance, ensure that we have the full disconnect/error message and the name of the network.
