Pennsylvania’s Emergency Management Agency is releasing new details on the 911 outage that affected the entire state earlier this month. According to PEMA, a preliminary report showed that the cause of intermittent outages within the Next-Generation 911 (NG911) system on July 11 was “due to a defect in an operating system.

We now know what caused the 911 outage across Pennsylvania earlier this month. According to Pennsylvania's Emergency Management Agency, the intermittent outages were caused by a defect in an operating system. The outage lasted several hours and is not believed to be the result of a cyber attack.