IT Analytics reports don't render when accessed from a client workstation but are accessible when accessed on the server hosting SQL Server Reporting Services (SSRS).
If SSRS is configured to use HTTP rather than HTTPS, reports are delivered as insecure content to browsers.
Release : All
Component : SQL Server Reporting Services
Note: If SSRS is configured to use HTTPS/SSL in your environment and you still receive a warning that "Only secure content is displayed" when accessing reports, refer to this Microsoft KB article:
All modern browsers and Internet Explorer can be configured to display insecure content. The method by which this is enabled differs by browser. The following hyperlinks will direct you to instructions for enabling insecure content presented by your SSRS server: