Experiencing Data Gaps for Customer Event Data Type – 02/01 – Resolved


Final Update: Monday, 01 February 2016 19:52 UTC

We’ve confirmed that all systems are back to normal with no customer impact as of 2/1, 19:45 UTC. Our logs show the incident started on 2/1, 13:30 UTC and that during the 6.25 hours that it took to resolve the issue, customers may have experienced a loss of availability data for web tests configured through the CA-SanJose, FL-Miami, IL-Chicago, TX-SanAntonio, and VA-Ashburn regions.
  • Root Cause: The failure was due to a code bug.
  • Lessons Learned: We understand the code bug, have implemented appropriate operational workarounds to restore service for all users, and are investigating the long-term bugfix.
  • Incident Timeline: 6 Hours & 15 minutes – 2/1, 13:30 UTC through 2/1, 19:45 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


Initial Update: Monday, 01 February 2016 15:15 UTC

We are aware of issues within Application Insights and are actively investigating. Some customers may experience Data Sample gaps for the web tests running in US region. The following data types are affected: Customer Event.

  • Work Around: none
  • Next Update: Before 02/01 19:30 UTC

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


-Application Insights Service Delivery Team


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