Final Update: Wednesday, 06 February 2019 19:26 UTC
We've confirmed that all systems are back to normal as of 02/06, 20:45 UTC and our logs show the incident started on 02/06, 18:00 UTC. Customers using alerts from public preview azure monitor may see incorrect triggers since platform metrics during the impact duration could not be persisted and also the customers will not be able to view platform metrics in public preview azure monitor UX. However, they can view platform metrics via metrics explorer.
Note: Custom metrics was not impacted by this issue.
Root Cause: The failure was due to an issue in one of our internal services.
Incident Timeline for East US, Southeast Asia, Central India: 45 minutes - 02/06, 18:00 UTC through 02/06, 18:45 UTC
Incident Timeline for Central Canada: 2 hours 45 minutes - 02/06, 18:00 UTC through 02/06, 20:45 UTC
We understand that customers rely on Application Insights as a critical service and apologize for any impact this incident caused.
Initial Update: Wednesday, 06 February 2019 18:00 UTC
We are aware of issues within Application Insights and are actively investigating. All customers in regions East US, Southeast Asia, Canada Central and Central India will experience data gaps in Azure Portal for Platform metrics from MDM.
Next Update: Before 02/06 20:00 UTC
We are working hard to resolve this issue and apologize for any inconvenience.