We have several WAB applications that work on anonymous access through Portal and don't use secure services. The plan is to federate our Portal with Server to host tile layers. When I federate through Portal all of our apps then prompt for login credentials. Has anyone run into this issue before? Here is the layout and settings:
Server 10.4.1 on Machine A
Web Adaptor 10.4.1 on Machine A for (Portal,http,https)
Portal 10.4.1 on Machine B
Server and Portal configured for http and https
Portal configured for anonymous access
All three web adaptors enabled anonymous access in IIS on Machine A
All maps and resources shared to "Everyone" on Portal