Final Update: Thursday, 17 October 2019 12:12 UTC
We've confirmed that all systems are back to normal with no customer impact as of 10/17, 11:00 UTC. Our logs show the incident started on 10/15, 10:05 UTC and that during the 55 minutes that it took to resolve the issue ~7% of the customers might experienced issues with data access in West Europe region for Log Analytics and also issues with Log Alerts not being triggered as expected.
- Root Cause: The failure was due to an issue in one of our backend service.
- Incident Timeline: 55 minutes - 10/17, 10:55 UTC through 10/17, 11:00 UTC
We understand that customers rely on Azure Log Analytics as a critical service and apologize for any impact this incident caused.
-Anmol