I have installed a Portal server with web adaptor. I have also set up IWA on the Portal and federated a Server for ArcGIS to Portal.
Now, the problem is that user can add shapefiles or gdb to Portal but not image files e.g. jpg, png to Portal. When user adds image files to Portal, the Portal just hangs at loading screen. But if user access Portal without web adaptor i.e. from port 7443 or the hosting server is unset, then user can upload image files again. The behavior is odd, anyone have ideas?