Thursday, October 28, 2021

Experiencing Data Access Issue in Azure portal for Log Analytics - 10/28 - Resolved

Final Update: Thursday, 28 October 2021 18:28 UTC

We've confirmed that all systems are back to normal with no customer impact as of 10/28, 18:30 PM UTC. Our logs show the incident started on 10/27, 09:31 AM UTC and that during the impact hours that it took to resolve the issue customers from multiple regions experienced Watchlist queries returning partial results, which may result in missed alerts.

  • Root Cause:  A Code change in backend service caused the partial results and missed alerts when using Watchlist.
  • Incident Timeline: 10/27, 09:31 AM UTC through 10/28, 18:30 PM UTC
We understand that customers rely on Azure Log Analytics as a critical service and apologize for any impact this incident caused.

-Arish B

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