Final Update: Thursday, 03 October 2019 03:55 UTC
We've confirmed that all systems are back to normal with no customer impact as of 10/3, 03:45 UTC. Our logs show the incident started on 10/2, 23:45 UTC and that during the 4 hours that it took to resolve the issue any customers in USGov Virginia or services dependent on querying Azure Log Analytics data experienced an inability to query that data.
- Root Cause: The failure was due to a middle-tier system authentication failure.
- Incident Timeline: 4 Hours & 0 minutes
We understand that customers rely on Azure Log Analytics and associated services as a critical service and apologize for any impact this incident caused.
-Jeff