We've confirmed that all systems are back to normal with no customer impact as of 10/26, 10:35 UTC. Our logs show the incident started on 10/26, 10:00 UTC and that during the 35 minutes that it took to resolve the issue 6.43% of customers experienced data access issues in the Azure portal.
Root Cause: The failure was due to issues in one of our dependent service .
Incident Timeline: 35 minutes - 10/26, 10:00 UTC through 10/26, 10:35 UTC
We understand that customers rely on Application Insights as a critical service and apologize for any impact this incident caused.