Final Update: Wednesday, 21 April 2021 16:26 UTC
We've confirmed that all systems are back to normal with no customer impact as of 04/21, 15:35 UTC. Our logs show the incident started on 04/21, 8:00 UTC and that during the 7 hours and 35 minutes that it took to resolve the issue some of the customers might have experienced intermittent data access issue and delayed or missed Log Search Alerts.
- Root Cause: The failure was due to an issue in one of our backend services.
- Incident Timeline: 7 Hours & 35 minutes - 04/21, 8:00 UTC through 04/21, 15:35 UTC
We understand that customers rely on Azure Log Analytics as a critical service and apologize for any impact this incident caused.
-Saika