Experiencing Data Gaps for Availability – 03/15 – Resolved

Final Update: Wednesday, 16 March 2016 00:31 UTC

We've confirmed that all systems are back to normal with no customer impact as of 3/16, 00:30 UTC. Our logs show the incident started on 3/15, 22:47 UTC and that during the one and half hour that it took to resolve the issue our customers would have seen delays in availability monitoring data. During the impact window,  alerts for availability monitoring were not functioning and therefore, if your webtest monitor detected an issue a notification wouldn't have been sent. Once the connectivity issue was resolved, historical data was uploaded to the service as customer tests were still running during the outage as well.

  • Root Cause: From initial investigation it looks like this is a connectivity issue between our regional monitoring nodes.
  • Lessons Learned: We are working on improving our telemetry to avoid such occurrences
  • Incident Timeline: 1 Hours & 43 minutes - 3/15 22:47 UTC  through  3/16 00:30 UTC

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


Initial Update: Tuesday, 15 March 2016 23:40 UTC

We are aware of issues within Application Insights and are actively investigating. Some customers may experience Data Gaps. The following data types are affected: Availability.
  • Work Around: None
  • Next Update: Before 03/16 03:00 UTC

We are working hard to resolve this issue and apologize for any inconvenience.

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