Several users have reported unexpected logoffs from the Interactive Brokers Traders Work Station at night. The TWS forces a logoff once per day, and the default seems to be 10 PM. To set this logoff time in the TWS go to Configure->Global Configuration->Exit where you will be able to set the Auto Log Off Timer.

We do not know why the TWS forces you to select a logoff time, but the same dialog allows you to be prompted about the exit.

There are, however, other things that often happen at night that could affect your automatic trading, over which you have some control. Many of these can also affect long optimizations. These include but are not limited to:

1. Hibernation
2. Shutoffs of disks because of power options
3. The operating systems performing maintenance activities
4. Your virus detection performing scans and/or maintenance
5. Your ISP performing maintenance or timing you out
6. Problems with the exchange you are trading (usually reported by IB with a flashing red bar, but you may not be watching)

Regarding #3 above, if you allow automatic installation of Windows updates, Windows will often reboot your computer without asking, killing any running programs, including NeuroShell. If you like to run overnight, it is best to allow automatic Windows downloads, but choose to install them yourself.

In view of all these things, please do not contact us about unexplained problems at night until you have completely researched all the above, because we cannot check these things on your computer.