Final Update: Friday, 19 March 2021 17:09 UTC
We've confirmed that all systems are back to normal with no customer impact as of 3/19, 14:36 UTC. Our logs show the incident started on 03/19, 07:00 UTC and that during the 7 hours and 36 minutes that it took to resolve the issue customers of Application Insights might have experienced a delay in data availability, missed or incorrect alerts, or data access API unavailability.
- Root Cause: The failure was due to a software flaw in a back-end system. A patch has been rolled out to the affected system and the problem is mitigated.
- Incident Timeline: 7 Hours & 36 minutes - 03/19, 07:00 UTC through 03/19, 14:36 UTC
We understand that customers rely on Application Insights as a critical service and apologize for any impact this incident caused.
-Jack