laptop and a wrench


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, 2015 Portal for ArcGIS
Bug ID Number BUG-000091061
SubmittedSeptember 29, 2015
Last ModifiedFebruary 15, 2023
Applies toPortal for ArcGIS
Version found10.3
Operating SystemWindows OS
Operating System Version7.0 64 Bit
StatusWill Not Be Addressed

Additional Information

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.


Use the machine name rather than the DNS alias.

Steps to Reproduce

Bug ID: BUG-000091061


  • Portal for ArcGIS

Get help from ArcGIS experts

Contact technical support

Download the Esri Support App

Go to download options

Discover more on this topic