I've configured an Apache httpd server (v2.2) as a reverse proxy (with SSL) to a Microsoft IIS website running an ASP.NET application with SQL Server Report Services. The proxy mostly works but Report Viewer reports aren't being proxied, all I get is a square window in Chrome and in IE I get the following error: This page contains both secure and nonsecure items. Do you want to display the non secure items? I click yes then I get the following: Unable to locate control: ReportFrame_ctl0_plchldrMainContent_1_ReportViewer1.