We've confirmed that all systems are back to normal with no customer impact as of 1/18, 22:07 UTC. Our logs show the incident started on M/D, 21:22 UTC and that during the 45 minutes that it took to resolve the issue customers experienced delayed ingestion of data in USGov Virginia region.
Root Cause: The failure was due to unexpectedly long back end maintenance process.
Incident Timeline: 45 minutes - 1/18, 21:22 UTC through 1/18, 22:07 UTC
We understand that customers rely on Application Insights as a critical service and apologize for any impact this incident caused.
Initial Update: Saturday, 18 January 2020 22:06 UTC
We are aware of issues within Application Insights and are actively investigating. Some customers may experience Data Latency in the USGov Virginia region.
Work Around: None
Next Update: Before 01/19 00:30 UTC
We are working hard to resolve this issue and apologize for any inconvenience. -Jeff