Hi,
I just installed a base deployment of ArcGIS Enterprise 10.9
Everything during the installation was ok, the components are working fine and are installed in the right order. I can publish to the portal without any problems from Pro.

But, when I go to the published feature layer in the portal I cant see any layers in the service

When I try to open the feature in the map viewer I get the error below, background maps opens fine. Its a 404browser error (page not found) so it does not give any clue on what's wrong

I can open the feature service i arcgis online, so I guess there is a problem with the communication between the server and portal internally.
The fedaration of the server is confirmed, but I have a strange message that I don't understand --> ArcGIS Server services URL "url/server/manager" cannot be validated against "url/server/manager/rest/info" If the service URL is a proxy URL verify it is accessible to clients.
I don't understand, if the status of the federation is ok what does the info mean?

Anyone recognize the problem and know how to fix it.
Appreciate any help!:)
Best/
Johan