We've confirmed that all systems are back to normal with no customer impact as of 06/06, 09:31 UTC. Our logs show the incident started on 06/06, 07:08 UTC and that during the 2 hours 23 minutes that it took to resolve the issue, some customers may have experienced issues ingesting telemetry in Log Analytics Workspace and also may have experienced intermittent data latency, data gaps and incorrect alert activation in West Central US.
Root Cause: We determined that this issue was caused by a misconfiguration in a dependent service.
Incident Timeline: 2 Hours & 23 minutes - 06/06, 07:08 UTC through 06/06, 09:31 UTC.
We understand that customers rely on Azure Log Analytics as a critical service and apologize for any impact this incident caused.
Initial Update: Sunday, 06 June 2021 08:18 UTC
We are aware of issues within Log Analytics in West Central US region and are actively investigating. Some customers may experience intermittent data latency, data gaps and incorrect alert activation.
Work Around: None
Next Update: Before 06/06 11:30 UTC
We are working hard to resolve this issue and apologize for any inconvenience. -Anmol