We've confirmed that all systems are back to normal with no customer impact as of 05/15, 08:20 UTC. Our logs show the incident started on 05/15, 05:55 UTC and that during the 2 hours & 25 minutes that it took to resolve the issue. Some of the customers using application insights may have experienced data access issue and delayed or missed alerts in West Europe region.
Root Cause: The failure was due to one of our backend dependency becoming unhealthy.
Incident Timeline: 2 Hours & 25 minutes - 05/15, 05:55 UTC through 05/15, 08:20 UTC.
We understand that customers rely on Application Insights as a critical service and apologize for any impact this incident caused.
Update: Sunday, 15 May 2022 07:01 UTC
We are aware of issues within Application Insights and are actively investigating. Some customers may experience data access issue and delayed or missed alerts in West Europe region.