Final Update: Wednesday, 25 September 2019 19:25 UTC
We've confirmed that all systems are back to normal with no customer impact as of 09/25, 19:15 UTC. Our logs show the incident started on 09/11,16:00 UTC and that during the 14 days,3 hours and 15 minutes that it took to resolve the issue some of the customers may have experienced Alerting failure for Exception based metric alerts in Application Insights.
- Root Cause: The failure was due to deployment in one of the backend services.
- Incident Timeline: 14 days,3 hours and 15 minutes - 09/11, 16:00 UTC through 09/25, 19:15 UTC
We understand that customers rely on Application Insights as a critical service and apologize for any impact this incident caused.
-Jayadev