Experiencing Query and Alerting Issues in West Europe for Azure Monitor – 12/18 – Resolved

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Final Update: Wednesday, 18 December 2019 20:52 UTC

We've confirmed that all systems are back to normal with no customer impact at present. Our logs show the incident started on 12/18, 18:00 UTC and that during the 1 hour 15 minutes that it took to resolve the issue some customers experienced data access and alerting failures. 
  • Root Cause: The failure was due to memory issue in underlying infrastructure. 
  • Incident Timeline: 1 Hour & 15 minutes - 12/18, 18:00 UTC through 12/18, 19:15 UTC
We understand that customers rely on Azure Monitor as a critical service and apologize for any impact this incident caused.


Initial Update: Wednesday, 18 December 2019 18:38 UTC

We are aware of issues within Azure Monitor and are actively investigating. Some customers may experience query and alerting failures against the data stored in West Europe region. 
  • Work Around:
  • Next Update: Before 12/18 21:00 UTC
We are working hard to resolve this issue and apologize for any inconvenience.

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