URLs sent using the sharing proxy in Portal for ArcGIS 10.3.1 fail with "Error 403" when the Portal site is referenced via a DNS alias, even when authentication information is passed.
Last Published: October 9, 2015Portal for ArcGIS
Bug ID Number
September 29, 2015
February 15, 2023
Portal for ArcGIS
Operating System Version
7.0 64 Bit
Will Not Be Addressed
The development team has considered the issue or request and concluded it will not be addressed. The issue's Additional Information section may contain further explanation.
This is expected behavior. When using a DNS alias to access Portal, either the web adaptor needs to be registered using the DNS alias or the WebContextURL parameter needs to be defined in portaladmin/system/properties. This will allow the sharing proxy to function as expected.