Portal asking for server credentials when I opening an unsecure service in a WebMap

[EmilienMeffe]

Hello everyone,

I try to include a feature layer and a MapLayer in a web map in the Portal, It works but when I try to open the web map the Portal asks for my server credentials.  
The service is not secure and should not ask me credentials. I tried to following esri configurations advice :

-   added my arcgis server in "trusted server" setting,

-   modification of the "Webcontext" setting in the portal

but i still have the same problem.

We are working with versions 10.4 of the Portal and 10.3.1 of the Arcgis Server (They are not federated).
Maybe there is a configure error somewhere?  Any help is appreciated

Thanks

[MohyudinAhmad]

Salut Emilien,

I believe that you may be running into a known bug which was addressed at 10.4. Are your Portal and ArcGIS Server on the same machine? If so, the following may be the problem...

BUG-000086352

'The map viewer prompts for credentials when adding an unsecured map service layer from an unfederated ArcGIS Server running on the same machine.'

http://downloads.esri.com/support/downloads/other_/104-IssuesAddressedList.pdf 

J'espère que ça t'aidera un peu!