Hi, I use IB TWS for Friends and Family Advisor Accts and have been using IB Security Device. When I start up TWS in the morning after entering Security Device Passcode, it stays up and running all day. Then in the evening around 9:30 PM PST, the TWS shows another Challenge and asks for Security Device Passcode for that challenge. If I enter a passcode for that challange, it does not accept it. If I cancel, it comes up with a new challenge. If I want to close TWS, I can't. I have to kill the session thru Task Manager. Then if I start it again, it is fine. Is there a way to gracefully either close TWS or step thru this Challange / Passcode issue around 9:30 PM PST? Thanks Ravi