Hi,
Since doing some work at ESRI's request with certificates, and subsequently having to restore our ArcGIS Portal server, no web appbuilder created applications (which is all of them) will finish loading. The map services (hosted on a different server) and base map and widget pull in fine, but the loading blobs never disappear and the app is unable to be used (see attached image). I also cannot create new apps using the inbuilt web appbuilder. I have one app that was created using Web Appbuilder for developers and therefore is hosted differently and this application works.
Please help!
Helen
If the SSL certificate has been modified, try re-configuring the Web Adapor with Server/Portal.
See if the Services trying to load with HTTPS.
Also check if the application trying to open through HTTPS.