Final Update: Thursday, 16 December 2021 06:01 UTC
We've confirmed that all systems are back to normal with no customer impact as of 12/16, 05:50 UTC. Our logs show the incident started on 12/16, 1:32 UTC and that during the 4 hours & 18 minutes that it took to resolve the issue some customers using Azure Log Analytics and/or Sentinel may have experienced ingestion latency and data gaps and incorrect alert activation in multiple regions ( West US, West US2, South East Asia, East US, East US2, Japan East, West Europe, Central US).
Root Cause: The failure was due to one of our dependent service.
Incident Timeline: 4 Hours & 18 minutes - 12/16, 1:32 UTC through 12/16, 05:50 UTC
We understand that customers rely on Azure Log Analytics as a critical service and apologize for any impact this incident caused.
-Srikanth
Initial Update: Thursday, 16 December 2021 05:16 UTC
We are aware of issues within Log Analytics and are actively investigating. Some customers may experience ingestion latency and data gaps and incorrect alert activation in multiple regions.
- Work Around: None
- Next Update: Before 12/16 08:30 UTC
We are working hard to resolve this issue and apologize for any inconvenience.
-Anmol
