We've confirmed that all systems are back to normal with no customer impact as of 5/11, 2:56 UTC. Our logs show the incident started on 5/11, 1:45 UTC and that during the ~1 hour 11 min that it took to resolve the issue customers in Central US experienced data latency, data gaps and incorrect alert activation.
Root Cause: The failure was due to one of the backend services becoming unhealthy
Incident Timeline: 1 Hours & 11 minutes - 5/11, 1:45 UTC through 5/11, 2:56 UTC
We understand that customers rely on Application Insights as a critical service and apologize for any impact this incident caused.
Initial Update: Tuesday, 11 May 2021 02:30 UTC
We are aware of issues within Application Insights in Central US region and are actively investigating. Some customers may experience intermittent data latency, data gaps and incorrect alert activation.
Work Around: None
Next Update: Before 05/11 04:30 UTC
We are working hard to resolve this issue and apologize for any inconvenience. -Anupama