NYSE: Bad software upgrade reason for outage

NYSE: Bad software upgrade reason for outage

The New York Stock Exchange said an outage of more than three hours was caused by problems associated with a software upgrade on the exchange's computers. The NYSE said in a statement Thursday that the upgrade caused communication problems between its trading software and other systems, causing customers' orders to not go through. The problem became severe enough by late morning Wednesday that the exchange decided to suspend trading at 11:32 a.m. Eastern time so the problem could be addressed. Orders were cancelled, trading software was restarted and backup units were brought online, the exchange said. The exchange restarted trading at 3:10 p.m. Eastern. Wednesday's...