We've confirmed that all systems are back to normal with no customer impact as of 07/07, 03:00 UTC. Our logs show the incident started on 07/05, 03:45 UTC and that during the 1 day, 23 hours and 15 minutes that it took to resolve the issue some of the customers with workspace-enabled Application Insights resources in Japan East region may have experienced intermittent log data latency and incorrect alert activation.
Root Cause: The failure was due to an issue with one of our dependent service.
Incident Timeline: 1 day, 23 hours & 15 minutes - 07/05, 03:45 UTC through 07/07, 03:00 UTC
We understand that customers rely on Application Insights as a critical service and apologize for any impact this incident caused.