Final Update: Tuesday, 17 September 2019 05:09 UTC
We've confirmed that all systems are back to normal with no customer impact as of 09/17, 03:30 AM UTC. Our logs show the incident started on 09/17, 02:50 AM UTC and that during the 40 minutes that it took to resolve the issue some customers using non-retrying SDK's in West US and West US2 region could have experienced data gaps while accessing their data.
Root Cause: The failure was due to an issue in one of our back-end services.
Incident Timeline: 40 minutes - 09/17, 02:50 AM UTC through 09/17, 03:30 AM UTC
We understand that customers rely on Application Insights as a critical service and apologize for any impact this incident caused.