Sometimes when trying to visit a website, you will get the following error from TMG:
Network Access Message: The page cannot be displayed
Explanation: The Web server refused the connection.
Error Code 10061: Connection refused
Background: The server you are attempting to access has refused the connection with the gateway. This usually results from trying to connect to a service that is inactive on the server.
This message means that the remote website is down. Contact the website owner to have them fix the issue.