The Backup System for the Tokyo Stock Exchange Was Set to “Off”
The first questions they always ask you when you call tech support about equipment that isn't working sound so condescending it hurts. Does it have a plug? Are you using it with it on? The truth is that they ask these questions because that is frequently the issue, which makes the majority of us feel humiliated by them. Additionally, it appeared to be the cause of the Tokyo Stock Exchange's closure in 2020.
A hardware malfunction and a software bug were blamed in the media for the trading halt, which lasted the entire day. Backup systems also malfunctioned, leaving traders with nothing to do all day. How did the backup system fare? It was turned "off" by someone. Since they upgraded their system, it had been on for five full years, but no one noticed because it had never been needed. Ironically, the system was programmed to switch to back over even when it was set to off previous to their upgrade. However, the upgrade took away that function.
