Google for interactive broker system status: https://www.interactivebrokers.com/de/index.php?f=2225&ns=T Due to scheduled system maintenance, clients will be unable to connect through our web, mobile, and TWS platforms [Mesg Id: 394584] 2016/03/12 06:29 It's Saturday, dude..
No, but obviously they do their maintenance when the markets are closed, so scheduled maintenance will be on the weekend, I think.
Pretty sure it isn't accessible later in the evening on Fridays and stays down for awhile for updates or whatever they need to do.