Experiencing Latency and Data Gaps for Availability Tests – 11/05 – Resolved

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Final Update: Thursday, 05 November 2020 23:55 UTC

We've confirmed that all systems are back to normal with no customer impact as of 11/5, 23:00 UTC. Our logs show the incident started on 11/5, 18:10 UTC and that during the 4 hours and 50 minutes that it took to resolve the issue some customers utilizing availability tests experienced duplicated results.
  • Root Cause: The failure was due to a misconfiguration of a value in a backend system resulting in the failure of test result batch submissions from the SDK.
  • Incident Timeline: 4 Hours & 50 minutes - 11/5, 18:10 UTC through 11/5, 23:00 UTC
We understand that customers rely on Application Insights as a critical service and apologize for any impact this incident caused.


Update: Thursday, 05 November 2020 22:54 UTC

Root cause has been isolated to a misconfiguration of a component that was impacting availability test submission from SDK. To address this issue we have begun deployment of a hotfix. Customers may still be experiencing availability test result duplication as a result of result resubmission.
  • Next Update: Before 11/06 01:00 UTC

Initial Update: Thursday, 05 November 2020 22:22 UTC

We are aware of issues within Application Insights availability tests and are actively investigating. Some customers may experience Duplicate results, Latency, and Data Gaps in their availability tests.
  • Next Update: Before 11/06 00:30 UTC
We are working hard to resolve this issue and apologize for any inconvenience.

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