Is anyone else having this issue? We have upgraded to 8.1.2 on premise core Splunk and now all our windows azure inputs are no longer working. The Azure Addon app we used to configure the inputs no longer work.
I often find these modular input views struggle to load when the system is under-powered or under heavy load. Obviously that's not the only cause, but it may be worth looking into if you aren't sure there aren't issues there.