We've confirmed that all systems are back to normal with no customer impact as of 02/23, 13:25 UTC. Our logs show the incident started on 02/23, 09:55 UTC and that during the 4 hours and 30 minutes that it took to resolve the issue hours that it took to resolve the issue some customers may have experienced intermittent data latency issues in East US region..
Root Cause: The failure was due to an issue with one of our dependent service.
Incident Timeline: 4 Hours & 30 minutes - 02/23, 09:55 UTC through 02/23, 13:25 UTC
We understand that customers rely on Azure Log Analytics as a critical service and apologize for any impact this incident caused.
Initial Update: Tuesday, 23 February 2021 12:01 UTC
We are aware of issues within Log Analytics and are actively investigating. Some customers may experience intermittent data latency issues in East US region.
Work Around: None
Next Update: Before 02/23 15:30 UTC
We are working hard to resolve this issue and apologize for any inconvenience. -Harshita