Experiencing Data Latency for Many Data Types – 04/21 – Resolved

Final Update: Friday, 22 April 2016 02:41 UTC

We've confirmed that all systems are back to normal with no customer impact as of 4/22, 02:11 UTC. Our logs show the incident started on 04/21, 23:19 UTC and that during the 3 hours that it took to resolve the issue customers experienced latency longer than 2 hours for many data types.
  • Root Cause: The failure was due to upgrades in a dependent backend service causing unexpected slowdowns.
  • Incident Timeline: 2 Hours & 52 minutes - 04/21, 23:19 UTC through 4/22, 02:11 UTC

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


Update: Thursday, 21 April 2016 23:49 UTC

Root cause has been isolated to an upgrade that was occurring on a dependent service which was impacting many data types. To address this issue we escalated to the partner team and have waiting for the upgrade to complete. Data continues to be latent outside of our two hour SLA for windows of data. We are processing through this data and will update when this data is up to date.
  • Work Around: none
  • Next Update: Before 04/22 12:00 UTC


Initial Update: Thursday, 21 April 2016 23:17 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: Customer Event,Dependency,Exception,Metric,Performance Counter,Request,Trace.
  • Work Around: none
  • Next Update: Before 04/22 03:30 UTC

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

Skip to main content