We've confirmed that all systems are back to normal with no customer impact as of 11/19, 11:25 UTC. Our logs show the incident started on 11/19, 09:20 UTC and that during the 2 hours and 05 minutes that it took to resolve the issue ~5% of customers experienced Data access issues.
Root Cause: The failure was due to failure in one of our dependent services.
Incident Timeline: 2 Hours & 05 minutes - 11/19, 9:20 UTC through 11/19, 11:25 UTC
We understand that customers rely on Application Insights as a critical service and apologize for any impact this incident caused.
Initial Update: Monday, 19 November 2018 10:28 UTC
We are aware of issues within Application Insights and are actively investigating. Some customers may experience Data Access Issue in Azure Portal.
Work Around: none
Next Update: Before 11/19 12:30 UTC
We are working hard to resolve this issue and apologize for any inconvenience.