Final Update: Thursday, 07 November 2019 12:29 UTC
We've confirmed that all systems are back to normal with no customer impact as of 11/07, 12:50 UTC. Our logs show the incident started on 11/06, 21:10 UTC and that during the 15 hours and 40 minutes that it took to resolve the issue some customers using Azure Monitor Services in West Europe may have experienced error while querying or/and ingesting data along with alerts failures or latent alerts. Customers who are using Service Map in West Europe may have also seen Ingestion delays and latency..
- Root Cause: The failure was due to azure storage outage in West Europe region.
- Incident Timeline: 15 Hours & 40 minutes - 11/06, 21:10 UTC through 11/07, 12:50 UTC
We understand that customers rely on Azure Log Analytics as a critical service and apologize for any impact this incident caused.
-Mohini