Final Update: Tuesday, 21 August 2018 04:33 UTC
We've confirmed that all systems are back to normal with no customer impact as of 08/21, 03:35 UTC. Our logs show the incident started on 08/21, 03:00 UTC and that during the 35 minutes that it took to resolve the issue all the customers with workspaces in East US experienced data access issues in the portal.
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Root Cause: The failure was due to an issue in one of our dependent platform services.
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Incident Timeline: 35 minutes - 08/21, 03:00 UTC through 08/21, 03:35 UTC
We understand that customers rely on Azure Log Analytics as a critical service and apologize for any impact this incident caused.
-Leela
