We've confirmed that all systems are back to normal with no customer impact as of 06/30, 17:25 UTC. Our logs show the incident started on 06/30, 15:45 UTC and that during the 1 hour and 40 minutes that it took to resolve the issue some of the customers in West Europe and East US regions might have experienced issues with delayed or missed Log Search Alerts.
Root Cause: The failure was due to an issue in one of our backend services.
Incident Timeline: 1 Hour & 40 minutes - 06/30, 15:45 UTC through 06/30, 17:25 UTC
We understand that customers rely on Log Analytics as a critical service and apologize for any impact this incident caused.
Initial Update: Wednesday, 30 June 2021 17:15 UTC
We are aware of issues within Log Search Alerts and are actively investigating. Some customers may experience delayed or missed Log Search Alerts in West Europe and East US regions.
Work Around: None
Next Update: Before 06/30 20:30 UTC
We are working hard to resolve this issue and apologize for any inconvenience. -Saika