To use WebTrader, your Internet Security and Privacy options must be set to the default levels. To check, on the Tools menu select Internet Options (IE) or Options (Firefox). On the Security and Privacy tabs, click Default Level if that button is active. If the button is gray, you are using the required default levels.
For more information, see the WebTrader Users' Guide.
Note: If you try to log into WebTrader and another WebTrader or TWS session with the same user name already active on any computer, you can disconnect the other session and begin a new session.