Final Update: Monday, 21 February 2022 13:12 UTC
We've confirmed that all systems are back to normal with no customer impact as of 02/21, 19:30 UTC. Our logs show the incident started on 02/21, 09:48 UTC and that during 9 hours and 42 minutes that it took to resolve the issue some of the customers ingesting telemetry in China East 2 region may have experienced intermittent data latency, data gaps and incorrect alert activation.
- Root Cause: The failure was due to one of our backend dependent services becoming unhealthy.
- Incident Timeline: 9 hours and 42 minutes - 02/21, 09:48 UTC through 02/21, 19:30 UTC
We understand that customers rely on Application Insights as a critical service and apologize for any impact this incident caused.
-Jayadev
