Experiencing Data Latency issue in Azure Portal for Many Data Types - 08/31 - Resolved

[Azure-Monitor-Team]

Final Update: Tuesday, 31 August 2021 17:47 UTC

We've confirmed that all systems are back to normal with no customer impact as of 8/31, 17:30 UTC. Our logs show the incident started on 8/31, 16:49 UTC and that during the 41 minutes that it took to resolve the issue customers in the West Europe region experienced possible data latency, data gaps and incorrect alert activation.

• Root Cause: The failure was due to throttling by a back-end dependency.
• Incident Timeline: 41 minutes - 8/31, 16:49 UTC through 8/31, 17:30 UTC

We understand that customers rely on Application Insights as a critical service and apologize for any impact this incident caused.

-Jack Cantwell

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Update: Tuesday, 31 August 2021 17:19 UTC

We continue to investigate issues within Application Insights. Root cause is not fully understood at this time. Some customers continue to experience Application Insights telemetry data latency and/or data gaps. We are working to establish the start time for the issue, initial findings indicate that the problem began at August 31, 17:12 UTC. We currently have no estimate for resolution.

• Next Update: Before 08/31 18:30 UTC

-Jack Cantwell

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