Final Update: Sunday, 10 June 2018 07:15 UTC
We've confirmed that all systems are back to normal with no customer impact as of 06/10, 06:43 UTC. Our logs show the incident started on 06/10, 03:42 UTC and that during the ~3 hours that it took to resolve the issue some customers would have experienced data access issue while accessing OMS portal.
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Root Cause: The failure was due to Azure Storage outage in West Europe.
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Incident Timeline: 3 Hours & 01 minutes - 06/10, 03:42 UTC through 06/10, 06:43 UTC
We understand that customers rely on Azure Log Analytics as a critical service and apologize for any impact this incident caused.
-Mohini