We've confirmed that all systems are back to normal with no customer impact as of 8/13, 02:13 UTC. Our logs show the incident started on 8/12, 23:30 UTC and that during the 2 hours and 43 that it took to resolve the issue, customers using non-retrying SDKs in the Fairfax Region could have experienced up to 10% of data gaps with a residual ~2% during the mitigation process.
Root Cause: The failure was due to one of our backend services
Incident Timeline: 2 Hours & 43 minutes - 8/12, 23:30 UTC through 8/13, 02:13 UTC
We understand that customers rely on Application Insights as a critical service and apologize for any impact this incident caused.
Initial Update: Tuesday, 13 August 2019 00:28 UTC
Work Around: none
Next Update: Before 08/13 02:30 UTC
We are working hard to resolve this issue and apologize for any inconvenience. -Eric Singleton