We've confirmed that all systems are back to normal with no customer impact as of 10/08, 05:14 UTC. Our logs show the incident started on 10/08, 00:35 UTC and that during the 4 hours & 39 minutes that it took to resolve the issue some customers may have experienced data latency, gaps and / or alerts getting triggered inaccurately for the resources hosted in North Europe region. This impact is limited to customers using Workspace-based Application Insights.
Root Cause: The failure was due to issues with one of our dependent service.
Incident Timeline: 4 Hours & 39 minutes - 10/08, 00:35 UTC through 10/08, 05:14 UTC
We understand that customers rely on Application Insights as a critical service and apologize for any impact this incident caused.
Initial Update: Thursday, 08 October 2020 02:05 UTC
We are aware of issues within Log Analytics based Application Insights and are actively investigating. Some customers may experience data latency, gaps, and inaccurate alerting in North Europe.
Work Around: NA
Next Update: Before 10/08 06:30 UTC
We are working hard to resolve this issue and apologize for any inconvenience. -Subhash