We've confirmed that all systems are back to normal with no customer impact as of 8/21, 17:17 UTC. Our logs show the incident started on 8/21, 17:06 UTC and that during the 11 minutes that it took to resolve the issue a small number of customers in the South Central US region experienced data latency and data gaps, as well as possible alert misfires.
Root Cause: The failure was due to an unexpected service interruption during a service update task.
Incident Timeline: 11 minutes - 8/21, 17:06 UTC through 8/21, 17:17 UTC
We understand that customers rely on Application Insights as a critical service and apologize for any impact this incident caused.
Initial Update: Friday, 21 August 2020 17:39 UTC
We are aware of issues within Application Insights in South Central US region and are actively investigating. Some customers may experience Latency and Data Gaps.
Work Around: None
Next Update: Before 08/21 20:00 UTC
We are working hard to resolve this issue and apologize for any inconvenience. -Jeff