Secured ArcGIS 10.1 for Server services on the GIS tier with Active Directory (AD) users and built-in roles cannot be added to an ArcGIS Online web map and returns the error, "Unable to access the authentication resource." A HTTP capture shows that the ArcGIS Online tokens page returns the error code, “400: Unable to Complete Operation" when attempting to pass through the ArcGIS Online sharing proxy.
Last Published: September 21, 2015ArcGIS for Server
Bug ID Number
May 14, 2015
August 21, 2020
ArcGIS for Server
After review by the development team, it has been determined that this issue is related to a known limitation with the software that lies outside of Esri's control. The issue's Additional Information section may contain further explanation.
CORS is not supported by the token services at ArcGIS 10.1 for Server.
Upgrade to ArcGIS 10.1 for Server Service Pack 1 (SP1) or later.