We've confirmed that all systems are back to normal with no customer impact as of 8/13, 17:30 UTC. Our logs show the incident started on 8/13, 12:55 UTC and that during the 4 hours and 35 minutes that it took to resolve the issue customers may have experienced issues with accessing the Live Metrics blade via the Azure Portal.
Root Cause: The failure was due to one of the back end dependent services.
Incident Timeline: 4 Hours & 35 minutes - 8/13, 12:55 UTC through 8/13, 17:30 UTC
We understand that customers rely on Application Insights as a critical service and apologize for any impact this incident caused.
Initial Update: Thursday, 13 August 2020 14:55 UTC
We are aware of issues within Application Insights and are actively investigating. Some customers may experience Data Access issue with Application Insights Live Metrics.
Work Around: None
Next Update: Before 08/13 17:00 UTC
We are working hard to resolve this issue and apologize for any inconvenience. -Rama