In the developer tools on the browser, I can see that I have a page not found error when pointing to the url in the location of the arcgis_js_api folder, which is placed in the wwwroot on the server.
I tried a few things from other posts with similar issues: confirmed that IIS_IUSRS has permissions on the arcgis_js_api folder. Also tried giving Everyone read access. I also tried Enabling anonymous authentication in the iis settings, but these did not make a difference. What else can I try to try and narrow down why the browser can't see the arcgis_js_api folder contents. Our server setup requires https. I am using js api 3.13, arcgis server 10.7.