Initial Update: Friday, 10/2/2015 23:44 UTC
We are aware of issues with custom data dimensions in Application Insights and are taking steps to mitigate the impact. A small subset of customers may see no data returned when filtering or grouping data by custom dimensions in the Azure Portal. This data exists, but is not being returned properly after filtering/grouping.
To address this issue, we are regenerating the metadata for the custom dimensions. We expect this effort to take several hours.
• Work Around: none
• Next Update: Before 10/3, 02:30 UTC
We are working hard to resolve this issue and apologize for any inconvenience.
-Application Insights Service Delivery Team