We've confirmed that all systems are back to normal with no customer impact as of 05/28, 21:19 UTC. Our logs show the incident started on 05/28, 19:10 UTC and that during the 30 minutes that it took to resolve the issue ~4% of customers in Application Insights and Azure Log Analytics might have experienced data access and data latency issues.
Root Cause: The failure was due to Azure storage issue.
Incident Timeline: 30 minutes - 05/28, 19:10 UTC through 05/28, 19:40 UTC
We understand that customers rely on Application Insights and Azure Log Analytics as critical services and apologize for any impact this incident caused.