Final Update: Thursday, 27 February 2020 11:35 UTC
We've confirmed that all systems are back to normal with no customer impact as of 02/27, 10:00 UTC. Our logs show the incident started on 02/27, 08:57 UTC and that during the 1 hour 03 minutes that it took to resolve the issue some customers in Central US region might have experienced data access issue and failures when queried through API.
Root Cause: The failure was due to an issue with one of our dependent service.
Incident Timeline: 01 Hours & 03 minutes - 02/27, 08:57 UTC through 02/27, 10:00 UTC
We understand that customers rely on Azure Log Analytics as a critical service and apologize for any impact this incident caused.
Initial Update: Thursday, 27 February 2020 10:08 UTC
We are aware of issues within Log Analytics and are actively investigating. Some customers in Central US may experience data access issue and failures when query through API.
Work Around: none
Next Update: Before 02/27 12:08 UTC
We are working hard to resolve this issue and apologize for any inconvenience. -Syed