We've confirmed that all systems are back to normal with no customer impact as of 09/12, 07:15 UTC. Our logs show the incident started on 09/12, 06:23 UTC and that during the 52 minutes that it took to resolve the issue some customers may have experienced delayed or missed Log Search Alerts and Data Access in East US region.
Root Cause: The failure was due to issue with one of our dependent service.
Incident Timeline: 52 minutes - 09/12, 06:23 UTC through 09/12, 07:15 UTC
We understand that customers rely on Application Insights as a critical service and apologize for any impact this incident caused.
Initial Update: Sunday, 12 September 2021 06:58 UTC
We are aware of issues within Application Insights and are actively investigating. Some customers may experience delayed or missed Log Search Alerts and Data Access in East US region.
Work Around: None
Next Update: Before 09/12 11:00 UTC
We are working hard to resolve this issue and apologize for any inconvenience. -Mohini