When I try and load an application from AGOL - I get the following error in the console:
XMLHttpRequest cannot load http://services.arcgisonline.com/ArcGIS/rest/services/World_Topo_Map/MapServer?f=json. No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'http://[domain].maps.arcgis.com' is therefore not allowed access.
where [domain] is my company domain. The problem occurs only in Chrome and only in certain instances of Chrome. Security folk swear all installs are the same.