I use the same Map Image Layer (and basemaps) to create a web map then copy the code to embed it. The AGOL version works on a web page, the one hosted on our Enterprise does not (it comes up blank, neither layer nor basemap drawing). We have a number of public and private apps that function as they should, this is the first time I've tried an embedded map. The documentation (Embed maps, apps, and groups—ArcGIS Online Help | Documentation ) is pretty straightforward, not using AGOL has tech support stumped. Any ideas?