WiscNet experienced a critical incident on July 16, 2026 affecting Dane County and Oregon School District and 1 more component, lasting 11h 25m. The incident has been resolved; the full update timeline is below.
Affected components
Update timeline
- identified Jul 16, 2026, 04:07 AM UTC
Hello, Around 10:30PM WiscNet observed alerts indicating a widespread outage, after investigation this is a maintenance event on one of WiscNet's partner's network. This work is scheduled to end at 6:00AM.
- identified Jul 16, 2026, 10:32 AM UTC
Hello, At this time we have seen most of the alarms cleared and services restored. We will reach out after 6 to confirm the maintenances status. Thank you,
- identified Jul 16, 2026, 11:29 AM UTC
Hello, We continue to observed 1 circuit down after the maintenance. We are currently working with our provider to investigate and restore the circuit. Please reach out with any questions. Thank you,
- identified Jul 16, 2026, 02:11 PM UTC
We are still seeing the City of Madison as down, circuit 400265. After further investigation, this outage was discovered to be due to construction. A tech is en route to the site for further investigation. They have an ETA around 15 minutes.
- identified Jul 16, 2026, 02:43 PM UTC
The tech onsite discovered a bad fiber. A splicer is en router to test and fix the bad fiber with an ETA around 1 hour.
- resolved Jul 16, 2026, 03:33 PM UTC
We are seeing circuit 400265 for the City of Madison as back up at 10:25 AM today. The issue was discovered to be a bad optic.
- postmortem Jul 16, 2026, 08:15 PM UTC
**POST-MORTEM TEMPLATE** Date & Time of Incident: 7/15/2026 10:32 PM Duration: 713 Technician\(s\): Jim Hamblin, Fue Khang Review Date: 7/16/2026 Brief Summary: Devices came into alarm at 10:32 PM on 7/15/2026 which was found to be due to a maintenance. After the maintenance, all circuits recovered except City of Madison. this was found to be due to a bad optic, which was changed and restored at 10:25 AM 7/16/2026. Root Cause: Maintenance and Bad optic