We've confirmed that all systems are back to normal with no customer impact as of 01/20, 22:40 UTC. Our logs show the incident started on 01/20, 22:50 UTC and that during the 10 mins that it took to resolve the issue, customers using Log Analytics or Azure Sentinel in Canada Central who may have experienced issues accessing your data as well as missed or delayed alerts.
Potential Root Cause: We found a backend service that had become unhealthy causing the delays and missing alerts.
Incident Timeline: 10 minutes - 01/20, 22:40 UTC through 01/20, 22:50 UTC
We understand that customers rely on Azure Log Analytics as a critical service and apologize for any impact this incident caused.