1. AT&Ts Long-Distance Miscalculation
This misculator occurred in 1990. AT&T was responsible for a large majority of long-distance mobile traffic within the USA.
However, an error in updating switches meant that the service was completely blocked for around 8 hours.
The company was forced to pay $60million in damages.
2. Critical Math Error in Pentium Chip
In 1993, Pentium had a crucial math error in their Pentium chip which would only be discovered a year later. It was to do with floating-points, and in fact, Intel was well aware of the error.
However, they calculated that this error would only occur once every 27,000 years. In actuality, it would happen every 24 days. Since it took a whole year to spot, we guess that the damage this math error caused was not too significant.
3. Windows Locking Out Genuine Users
In 2007, Windows was trying to tackle piracy.
However, their validation system targeted genuine users who were then unable to access the operating system for a whole 19 hours.
4. Apple Maps Getting Lost on the Road
In 2012, Apple decided to rival Google and unveiled its own maps application. However, the rollout was hampered due to many incorrect roads and tourist attractions.
Furthermore, the navigation on the app was leading users to nowhere.
5. Facebook, Instagram & Messenger Down for 14 Hours
2019 showed us how addicted we are to social media. This Facebook outage also affected Instagram.
A crucial error in the server configuration led to problems within all these apps, and Facebook’s stocks took a tumble as a result.