Final Update: Monday, 05 February 2018 21:53 UTC
It is to inform that some customers who have configured their availability tests from France location might have seen failures in their availability data chart starting from 02/05, 17:00 UTC till 02/05, 21:00 UTC. This is due to planned activity in our underlying infrastructure. This doesn't impact availability of customer's web application and we advised customers to configure their web tests at least from 3 locations to have reliable coverage and results.
We understand that customers rely on Application Insights as a critical service and apologize for any impact this incident caused.