Experiencing Data Latency for Many Data Types – 01/01 – Resolved


Final Update: Friday, 01 January 2016 08:30 UTC

We've confirmed that all systems are back to normal with no customer impact as of 01/01, 08:30 UTC. Our logs show the incident started on 01/01, 02:50 UTC and that during the 5 hours & 40 minutes that it took to resolve the issue small percentage of customers would have experienced data latency.
  • Root Cause: The failure was due to surge in the ingested data due to quota caps being reset.
  • Lessons Learned: Our Engineering team is reviewing available telemetry data during the incident to identify improvements to avoid further impact.
  • Incident Timeline: 05 Hours & 40 minutes - 01/01, 02:50 UTC through 01/01, 08:30 UTC

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

-Application Insights Service Delivery Team


Update: Friday, 01 January 2016 05:48 UTC

Root cause has been isolated to an issue with the surge in the ingested data due to quota caps being reset. Processing is now working as expected. Some customers may continue to experience data gaps and we estimate 4 hours before all latency is addressed.
  • Work Around: None
  • Next Update: Before 01/01 10:00 UTC

-Application Insights Service Delivery Team


Initial Update: Friday, 01 January 2016 03:00 UTC

We are aware of issues within Application Insights and are actively investigating. Some customers may experience Data Latency. The following data types are affected: Availability,Customer Event,Dependency,Exception,Metric,Page Load,Page View,Performance Counter,Request,Trace.
  • Next Update: Before 01/01 07:00 UTC

We are working hard to resolve this issue and apologize for any inconvenience.
-Application Insights Service Delivery Team


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