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Final Update: Monday, 05 August 2019 13:11 UTC

We've confirmed that all systems are back to normal with no customer impact as of 08/05 12:30 PM UTC. Our logs show the incident started on 08/05 09:30 AM UTC and that during the 3 hours that it took to resolve the issue some of customers experienced issues while accessing their data in the Azure Portal. Query performance and Log Search Alerts would also have been impacted.
  • Root Cause: The failure was due to a backend service experiencing performance degradation.
  • Incident Timeline: 3 Hours - 08/05 09:30 AM UTC through 08/05 12:30 PM UTC
We understand that customers rely on Azure Log Analytics as a critical service and apologize for any impact this incident caused.

-Varun

Initial Update: Monday, 05 August 2019 11:59 UTC

We are aware of issues within Log Analytics and Log Search alert and are actively investigating. Some customers in North Europe, West Europe and South Africa North may experience data access issue in the azure portal and when queried through API.
  • Next Update: Before 08/05 15:00 UTC
We are working hard to resolve this issue and apologize for any inconvenience.
-Monish

1 Comment
Occasional Visitor

I don't think this issue is resolved yet, unless I'm missing something.

I'm seeing the following (in West Europe)... the overview shows server requests over the past hour, but querying on "requests" shows nothing for the past 24 hours.

overview_requests.pngquery_requests.png