Final Update: Monday, 17 February 2020 15:01 UTC
We've confirmed that all systems are back to normal with no customer impact as of 02/17, 12:30 UTC. Our logs show the incident started on 02/15, 15:00 UTC and that during the 45 hours & 30 minutes that it took to resolve the issue Some customers may have experienced data loss issue in azure portal for some data types in South UK region.
- Root Cause: The failure was due issues with one of our dependent service.
- Incident Timeline: 45 Hours & 30 minutes - 02/15, 15:00 UTC through 02/17, 12:30 UTC
We understand that customers rely on Azure Log Analytics as a critical service and apologize for any impact this incident caused.
-Anusha