We've confirmed that all systems are back to normal with no customer impact as of 09/03, 02:00 UTC. Our logs show the incident started on 09/01, 00:00 UTC and that during the 2 days 2 hours that it took to resolve the issue all the customers experienced newly added availability web tests and classic metric alerts are in disabled state during the impact window
Root Cause: The failure was due to an issue with one of our dependent services
Incident Timeline: 2 Days & 2 Hours - 09/03, 02:00 UTC through 09/01, 00:00 UTC
We understand that customers rely on Application Insights as a critical service and apologize for any impact this incident caused.