We've confirmed that all systems are back to normal as of 06/02, 13:00 UTC. Our logs show the incident started on 06/02, 13:35 UTC and that during 35 minutes that it took to resolve the issue, some customers might have experienced data access issues in Log Analytics, and delayed or missed Log Search Alerts in West Europe region.
Root Cause: The failure was due to an issue in one of our dependent services.
Incident Timeline: 35 minutes - 06/02, 13:00 UTC through 06/02, 13:35 UTC
We understand that customers rely on Azure Log Analytics as a critical service and apologize for any impact this incident caused.
Initial Update: Tuesday, 02 June 2020 13:57 UTC
We are aware of issues within Log Analytics and are actively investigating. Some customers may experience failures when running queries and issues with missed or delayed Log Search alerts hosted in West Europe region.
Work Around: None
Next Update: Before 06/02 16:00 UTC
We are working hard to resolve this issue and apologize for any inconvenience. -Anmol