Experiencing Data Latency for Log Analytics – 12/01 – Resolved

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Final Update: Wednesday, 01 December 2021 14:37 UTC

We've confirmed that all systems are back to normal with no customer impact as of 12/01, 14:42 UTC. Our logs show the incident started on 12/01, 08:15 UTC and that during the 6 hours and 27 minutes that it took to resolve the issue some customers with Log Analytics workspaces in the West Europe region may have experienced data latency and incorrect alert activation.
  • Root Cause: The failure was due to a configuration issue in a backend service.
  • Incident Timeline: 6 Hours & 27 minutes - 12/01, 08:15 UTC through 12/01, 14:42 UTC
We understand that customers rely on Azure Log Analytics as a critical service and apologize for any impact this incident caused.

-Madhuri

Initial Update: Wednesday, 01 December 2021 12:42 UTC

We are aware of issues within Log Analytics and are actively investigating. Some customers with Log Analytics workspaces in the West Europe region may experience data latency and incorrect alert activation starting at 2021-12-1 08:15 UTC.
  • Work Around: None
  • Next Update: Before 12/01 17:00 UTC
We are working hard to resolve this issue and apologize for any inconvenience.
-Madhuri

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