Final Update: Wednesday, 26 May 2021 17:02 UTC
We've confirmed that all systems are back to normal with no customer impact as of 05/26, 17:03 UTC. Our logs show the incident started on 05/26, 11:14 UTC and that during the 5+ hours that it took to resolve the issue 100% of customers in the UK South region experienced ingestion latency and misfired alerts.
- Root Cause: The failure was due to an incorrect configuration of a back end service rolled out in a new deployment.
- Incident Timeline: 5 Hours, 49 minutes - 05/26, 11:14 UTC through 05/26, 17:03 UTC
We understand that customers rely on Azure Log Analytics as a critical service and apologize for any impact this incident caused.
-Jack
