Final Update: Friday, 21 December 2018 00:58 UTC
We've confirmed that all systems are back to normal with no customer impact as of 12/20, 23:15 UTC. Our logs show the incident started on 12/20, 09:25 UTC and that during the ~14 hours that it took to resolve the issue some of customers who have workspaces in SEAU would have experienced intermittent failure notifications while attempting to query data from the Azure and OMS Portals.
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Root Cause: The failure was due to issue with one of our dependent backend service.
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Incident Timeline: 13 Hours & 50 minutes - 12/20, 09:25 UTC through 12/20, 23:15 UTC
We understand that customers rely on Azure Log Analytics as a critical service and apologize for any impact this incident caused.
-Vishal Suram
