Final Update: Thursday, 28 May 2020 19:41 UTC
We've confirmed that all systems are back to normal with no customer impact as of 5/28, 19:26 UTC. Our logs show the incident started on 5/26, 17:41 UTC and that during the 2 days, 1 hour, 45 minutes that it took to resolve the issue 1.2% of customers experienced an inability to register with Microsoft.Insights resource provider which may have resulted in failures to create alerts or other anomalies.
- Root Cause: The failure was due to an updated backend service configuration problem.
- Incident Timeline: 2 Days, 1 Hour & 45 minutes - 5/26, 17:41 UTC through 5/28, 19:26 UTC
We understand that customers rely on Application Insights as a critical service and apologize for any impact this incident caused.
-Jeff