We've confirmed that all systems are back to normal with no customer impact as of 03/19, 10:05 UTC. Our logs show the incident started on 03/19, 09:45 UTC and that during the 20 minutes that it took to resolve the issue some customers may have experienced intermittent data latency, data gaps, and incorrect alert activation while ingesting telemetry in the West Europe region.
Root Cause: The failure was due to an issue in one of our dependent service.
Incident Timeline: 20 Minutes - 03/19, 09:45 UTC through 03/19, 10:05 UTC.
We understand that customers rely on Application Insights as a critical service and apologize for any impact this incident caused.